Martin J Schalij

发表

Assessment of signal quality and electrode placement in ECGs using a reconstruction matrix

Arie C Maan, Erik W van Zwet, SumChe Man, 2011, 2011 Computing in Cardiology.

The spatial QRS-T angle in the Frank vectorcardiogram: accuracy of estimates derived from the 12-lead electrocardiogram.

Martin J Schalij, Cees A Swenne, Jan A Kors, 2010, Journal of electrocardiology.

Left ventricular muscle and fluid mechanics in acute myocardial infarction.

Jeroen J. Bax, Martin J Schalij, Partho P Sengupta, 2010, The American journal of cardiology.

Follow-up after pulmonary valve replacement in adults with tetralogy of Fallot: association between QRS duration and outcome.

Martin J Schalij, Cees A Swenne, M. Schalij, 2010, Journal of the American College of Cardiology.

Noninvasive Imaging in Cardiac Resynchronization Therapy—Part 2: Follow‐up and Optimization of Settings

Jeroen J. Bax, Theodore P Abraham, Martin J Schalij, 2008, Pacing and clinical electrophysiology : PACE.

Automated assessment of the aortic root dimensions with multidetector row computed tomography.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2011, The Annals of thoracic surgery.

Value of tissue Doppler echocardiography in predicting response to cardiac resynchronization therapy in patients with heart failure.

Jeroen J. Bax, Martin J Schalij, Eduard R Holman, 2010, The American journal of cardiology.

Noninvasive visualization of the cardiac venous system using multislice computed tomography.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2005, Journal of the American College of Cardiology.

Epicardium-derived cells are important for correct development of the Purkinje fibers in the avian heart.

Martin J Schalij, Ad J J C Bogers, M. Schalij, 2006, The anatomical record. Part A, Discoveries in molecular, cellular, and evolutionary biology.

Real-time 3-dimensional echocardiography early after acute myocardial infarction: incremental value of echo-contrast for assessment of left ventricular function.

Jeroen J. Bax, Martin J Schalij, Eduard R Holman, 2009, American heart journal.

Images in cardiovascular medicine. Epicardial radiofrequency catheter ablation of ventricular tachycardia in the vicinity of coronary arteries is facilitated by fusion of 3-dimensional electroanatomical mapping with multislice computed tomography.

Katja Zeppenfeld, Jeroen J. Bax, Martin J Schalij, 2006, Circulation.

Elucidation of the spatial ventricular gradient and its link with dispersion of repolarization.

Martin J Schalij, Cees A Swenne, M. Schalij, 2006, Heart rhythm.

Role of multislice computed tomography in transcatheter aortic valve replacement.

Jeroen J. Bax, Martin J Schalij, D. Wood, 2009, The American journal of cardiology.

Cardiac resynchronization therapy: Part 2--issues during and after device implantation and unresolved questions.

Christophe Leclercq, Jeroen J. Bax, Juhani Knuuti, 2005, Journal of the American College of Cardiology.

Epicardial substrate mapping for ventricular tachycardia ablation in patients with non-ischaemic cardiomyopathy: a new algorithm to differentiate between scar and viable myocardium developed by simultaneous integration of computed tomography and contrast-enhanced magnetic resonance imaging.

Katja Zeppenfeld, Martin J Schalij, Rob J van der Geest, 2013, European heart journal.

Management of patients receiving implantable cardiac defibrillator shocks: recommendations for acute and long-term patient management.

Giuseppe Boriani, Renato Ricci, Martin J Schalij, 2010, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology.

Reduction of QRS duration after pulmonary valve replacement in adult Fallot patients is related to reduction of right ventricular volume.

Arie C Maan, Martin J Schalij, Cees A Swenne, 2005, European heart journal.

Effect of total scar burden on contrast-enhanced magnetic resonance imaging on response to cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2007, The American journal of cardiology.

Drug-eluting stents: results, promises and problems.

J Wouter Jukema, Martin J Schalij, J. Jukema, 2005, International journal of cardiology.

Normal limits of the spatial QRS-T angle and ventricular gradient in 12-lead electrocardiograms of young adults: dependence on sex and heart rate.

Arie C Maan, Martin J Schalij, Cees A Swenne, 2008, Journal of electrocardiology.

An automated hybrid bioelectronic system for autogenous restoration of sinus rhythm in atrial fibrillation

Katja Zeppenfeld, Guo Qi Zhang, Martin J Schalij, 2019, Science Translational Medicine.

Localized Optogenetic Targeting of Rotors in Atrial Cardiomyocyte Monolayers

Alexander V Panfilov, Martin J Schalij, Rupamanjari Majumder, 2017, Circulation. Arrhythmia and electrophysiology.

Intrathoracic impedance monitoring to predict decompensated heart failure.

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2007, The American journal of cardiology.

Multimodality imaging in transcatheter aortic valve implantation: key steps to assess procedural feasibility.

Jeroen J. Bax, Martin J Schalij, J. Schuijf, 2010, EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology.

Fluoroscopic Roentgen stereophotogrammetric analysis (FRSA) to study three-dimensional stent graft dynamics.

Bart L Kaptein, Edward R Valstar, Martin J Schalij, 2009, Journal of vascular surgery.

Clinical versus echocardiographic parameters to assess response to cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, Cheuk-Man Yu, 2006, The American journal of cardiology.

Automated quantification of coronary plaque with computed tomography: comparison with intravascular ultrasound using a dedicated registration algorithm for fusion-based quantification.

Jouke Dijkstra, Alexander Broersen, Jeroen J. Bax, 2012, European heart journal.

Left Ventricular Reverse Remodeling but Not Clinical Improvement Predicts Long-Term Survival After Cardiac Resynchronization Therapy

Jeroen J. Bax, Martin J Schalij, Cheuk-Man Yu, 2005, Circulation.

Long-term prognosis after cardiac resynchronization therapy is related to the extent of left ventricular reverse remodeling at midterm follow-up.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2009, Journal of the American College of Cardiology.

Head-to-head comparison of contrast-enhanced magnetic resonance imaging and electroanatomical voltage mapping to assess post-infarct scar characteristics in patients with ventricular tachycardias: real-time image integration and reversed registration.

Katja Zeppenfeld, Jeroen J. Bax, Martin J Schalij, 2011, European heart journal.

Beats: An interactive research oriented ECG analysis system

Arie C Maan, Martin J Schalij, Cees A Swenne, 2010, 2010 Computing in Cardiology.

Difference vectors to describe dynamics of the ST segment and the ventricular gradient in acute ischemia.

B Milan Horáček, Arie C Maan, Martin J Schalij, 2013, Journal of electrocardiology.

Directionality and proportionality of the ST and ventricular gradient difference vectors during acute ischemia.

Arie C Maan, Martin J Schalij, Cees A Swenne, 2014, Journal of electrocardiology.

Prevalence and characteristics of patients with clinical improvement but not significant left ventricular reverse remodeling after cardiac resynchronization therapy.

Tomasz Witkowski, Don Poldermans, Martin J Schalij, 2010, American heart journal.

Prognostic importance of strain and strain rate after acute myocardial infarction.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2010, European heart journal.

Single-beat estimation of the left ventricular end-diastolic pressure–volume relationship in patients with heart failure

Jeroen J. Bax, Martin J Schalij, Daniel Burkhoff, 2009, Heart.

Left Ventricular Resynchronization Is Mandatory for Response to Cardiac Resynchronization Therapy: Analysis in Patients With Echocardiographic Evidence of Left Ventricular Dyssynchrony at Baseline

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2007, Circulation.

Role of left ventricular twist mechanics in the assessment of cardiac dyssynchrony in heart failure.

Jeroen J. Bax, Martin J Schalij, Partho P Sengupta, 2009, JACC. Cardiovascular imaging.

Noninvasive evaluation of the aortic root with multislice computed tomography implications for transcatheter aortic valve replacement.

Jeroen J. Bax, Martin J Schalij, J. Schuijf, 2008, JACC. Cardiovascular imaging.

Hypertensive Stress Increases Dispersion of Repolarization

Martin J Schalij, Cees A Swenne, Jan A Kors, 2004, Pacing and clinical electrophysiology : PACE.

Real-time three-dimensional echocardiography as a novel approach to assess left ventricular and left atrium reverse remodeling and to predict response to cardiac resynchronization therapy.

Jeroen J. Bax, Stefano Ghio, Martin J Schalij, 2008, Heart rhythm.

Predictive power of T-wave alternans and of ventricular gradient hysteresis for the occurrence of ventricular arrhythmias in primary prevention cardioverter-defibrillator patients.

Laura Burattini, Roberto Burattini, Sumche Man, 2011, Journal of electrocardiology.

Atrial fibrillation: multi-detector row CT of pulmonary vein anatomy prior to radiofrequency catheter ablation--initial experience.

Jeroen J. Bax, Koos Geleijns, Eric Boersma, 2005, Radiology.

Image integration in catheter ablation of atrial fibrillation.

Jeroen J. Bax, Theodore P Abraham, Hugh Calkins, 2008, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology.

Martin J Schalij, M. Schalij, L. van Erven, 2011, Journal of the American College of Cardiology.

Comparison between tissue Doppler imaging and velocity-encoded magnetic resonance imaging for measurement of myocardial velocities, assessment of left ventricular dyssynchrony, and estimation of left ventricular filling pressures in patients with ischemic cardiomyopathy.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2008, The American journal of cardiology.

Predicting Ventricular Arrhythmias in Patients With Ischemic Heart Disease: Clinical Application of the ECG-Derived QRS-T Angle

Jeroen J. Bax, Martin J Schalij, Cees A Swenne, 2009, Circulation. Arrhythmia and electrophysiology.

Human adult bone marrow mesenchymal stem cells repair experimental conduction block in rat cardiomyocyte cultures.

Martin J Schalij, Arnoud van der Laarse, Douwe E Atsma, 2005, Journal of the American College of Cardiology.

Left ventricular dyssynchrony predicts response and prognosis after cardiac resynchronization therapy.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2004, Journal of the American College of Cardiology.

Longitudinal mechanics of the periinfarct zone and ventricular tachycardia inducibility in patients with chronic ischemic cardiomyopathy.

Katja Zeppenfeld, Jeroen J. Bax, Martin J Schalij, 2010, American heart journal.

Accessory Atrioventricular Myocardial Connections in the Developing Human Heart: Relevance for Perinatal Supraventricular Tachycardias

Martin J Schalij, Regina Bökenkamp, M. Schalij, 2008, Circulation.

Real‐Time Three‐Dimensional Echocardiography Permits Quantification of Left Ventricular Mechanical Dyssynchrony and Predicts Acute Response to Cardiac Resynchronization Therapy

Jeroen J. Bax, Stefano Ghio, Martin J Schalij, 2008, Journal of cardiovascular electrophysiology.

Left ventricular dyssynchrony predicts benefit of cardiac resynchronization therapy in patients with end-stage heart failure before pacemaker implantation.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2003, The American journal of cardiology.

Contrast-Enhanced MRI–Derived Scar Patterns and Associated Ventricular Tachycardias in Nonischemic Cardiomyopathy: Implications for the Ablation Strategy

Katja Zeppenfeld, Martin J Schalij, Rob J van der Geest, 2013, Circulation. Arrhythmia and electrophysiology.

Usefulness of myocardial tissue Doppler echocardiography to evaluate left ventricular dyssynchrony before and after biventricular pacing in patients with idiopathic dilated cardiomyopathy.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2003, The American journal of cardiology.

Vectorcardiographic diagnostic & prognostic information derived from the 12-lead electrocardiogram: Historical review and clinical perspective.

Sumche Man, Arie C Maan, Martin J Schalij, 2015, Journal of electrocardiology.

Call-to-balloon time dashboard in patients with ST-segment elevation myocardial infarction results in significant improvement in the logistic chain.

Martin J Schalij, M. Schalij, V. Umans, 2017, EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology.

Relationship Between QRS Duration and Left Ventricular Dyssynchrony in Patients with End‐Stage Heart Failure

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2004, Journal of cardiovascular electrophysiology.

QRS prolongation after premature stimulation is associated with polymorphic ventricular tachycardia in nonischemic cardiomyopathy: Results from the Leiden Nonischemic Cardiomyopathy Study.

Katja Zeppenfeld, Martin J Schalij, J Peter van Tintelen, 2016, Heart rhythm.

Trans-venous lead removal without the use of extraction sheaths, results of >250 removal procedures.

Martin J Schalij, Marianne Bootsma, M. Schalij, 2012, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology.

Electropathological Substrate of Longstanding Persistent Atrial Fibrillation in Patients With Structural Heart Disease: Epicardial Breakthrough

Ulrich Schotten, Eric Boersma, Martin J Schalij, 2010, Circulation.

Noninvasive imaging of cardiac venous anatomy with 64-slice multi-slice computed tomography and noninvasive assessment of left ventricular dyssynchrony by 3-dimensional tissue synchronization imaging in patients with heart failure scheduled for cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, Eduard R Holman, 2008, The American journal of cardiology.

Invasive versus noninvasive evaluation of coronary artery disease.

Jeroen J. Bax, William Wijns, Isabel Decramer, 2008, JACC. Cardiovascular imaging.

Guidelines on myocardial revascularization.

Volkmar Falk, Patrick W Serruys, Philippe Kolh, 2010, European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.

Voltage and Activation Mapping: How the Recording Technique Affects the Outcome of Catheter Ablation Procedures in Patients With Congenital Heart Disease

Katja Zeppenfeld, Martin J Schalij, M. Schalij, 2003, Circulation.

Quantification of functional mitral regurgitation by real-time 3D echocardiography: comparison with 3D velocity-encoded cardiac magnetic resonance.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2009, JACC. Cardiovascular imaging.

Impact of Viability, Ischemia, Scar Tissue, and Revascularization on Outcome After Aborted Sudden Death

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2003, Circulation.

Prevalence and pathophysiologic attributes of ventricular dyssynchrony in arrhythmogenic right ventricular dysplasia/cardiomyopathy.

Amy Daly, Jeroen J. Bax, Theodore P Abraham, 2009, Journal of the American College of Cardiology.

Long-term follow-up of primary and secondary prevention implantable cardioverter defibrillator patients.

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2011, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology.

Impact of viability and scar tissue on response to cardiac resynchronization therapy in ischaemic heart failure patients.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2006, European heart journal.

Changes in global left ventricular function by multidirectional strain assessment in heart failure patients undergoing cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, Cheuk-Man Yu, 2009, Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.

Effect of Posterolateral Scar Tissue on Clinical and Echocardiographic Improvement After Cardiac Resynchronization Therapy

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2006, Circulation.

Role of imaging in cardiac stem cell therapy.

Jeroen J. Bax, William Wijns, Martin Penicka, 2007, Journal of the American College of Cardiology.

Prediction of arrhythmias in primary prevention ICD patients: Resting versus exercise electrocardiogram

Laura Burattini, Roberto Burattini, Sumche Man, 2011, 2011 Computing in Cardiology.

Optimal use of echocardiography in cardiac resynchronisation therapy

Jeroen J. Bax, Martin J Schalij, Eduard R Holman, 2007, Heart.

Quantification of left ventricular mechanical dyssynchrony by conductance catheter in heart failure patients.

Jeroen J. Bax, Jan Baan, Martin J Schalij, 2004, American journal of physiology. Heart and circulatory physiology.

Performance of ST and ventricular gradient difference vectors in electrocardiographic detection of acute myocardial ischemia.

Sumche Man, Ron Wolterbeek, Arie C Maan, 2015, Journal of electrocardiology.

Non-invasive visualization of the cardiac venous system in coronary artery disease patients using 64-slice computed tomography.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2006, Journal of the American College of Cardiology.

Magnetic resonance imaging and response to cardiac resynchronization therapy: relative merits of left ventricular dyssynchrony and scar tissue.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2009, European heart journal.

Transcatheter aortic valve implantation: role of multi-detector row computed tomography to evaluate prosthesis positioning and deployment in relation to valve function.

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2010, European heart journal.

Hemodynamic and clinical impact of prosthesis-patient mismatch after transcatheter aortic valve implantation.

Gloria Tamborini, Mauro Pepi, Jeroen J. Bax, 2011, Journal of the American College of Cardiology.

Cardiac resynchronization therapy: Part 1--issues before device implantation.

Christophe Leclercq, Jeroen J. Bax, Juhani Knuuti, 2005, Journal of the American College of Cardiology.

Effect of intracoronary aqueous oxygen on left ventricular remodeling after anterior wall ST-elevation acute myocardial infarction.

Jeroen J. Bax, J Wouter Jukema, Martin J Schalij, 2005, The American journal of cardiology.

Imaging of atherosclerosis: invasive and noninvasive techniques.

Jeroen J. Bax, J Wouter Jukema, Martin J Schalij, 2009, Hellenic journal of cardiology : HJC = Hellenike kardiologike epitheorese.

Fusion of multislice computed tomography imaging with three-dimensional electroanatomic mapping to guide radiofrequency catheter ablation procedures.

Katja Zeppenfeld, Jeroen J. Bax, Martin J Schalij, 2005, Heart rhythm.

Guidelines on Myocardial Revascularization the Task Force on Myocardial Revascularization of the European Society of Cardiology (esc) and the European Association for Cardio-thoracic Surgery (eacts) Developed with the Special Contribution of the European Association for Percutaneous Cardiovascular I

Volkmar Falk, Patrick W Serruys, Philippe Kolh, 2022 .

Left ventricular dyssynchrony in patients with heart failure: pathophysiology, diagnosis and treatment

Jeroen J. Bax, Martin J Schalij, Paul Steendijk, 2006, Nature Clinical Practice Cardiovascular Medicine.

Comparison of Left Ventricular Volume and Ejection Fraction and Frequency and Extent of Aortic Regurgitation After Operative Repair of Type A Aortic Dissection Among Three Different Surgical Techniques.

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2016, The American journal of cardiology.

Nuclear Imaging in Cardiac Resynchronization Therapy*

Jeroen J. Bax, Martin J Schalij, M. Henneman, 2007, Journal of Nuclear Medicine.

Real-time integration of MDCT-derived coronary anatomy and epicardial fat: impact on epicardial electroanatomic mapping and ablation for ventricular arrhythmias.

Katja Zeppenfeld, Martin J Schalij, Rob J van der Geest, 2013, JACC. Cardiovascular imaging.

Fusion of Electroanatomical Activation Maps and Multislice Computed Tomography to Guide Ablation of a Focal Atrial Tachycardia in a Fontan Patient

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2006, Journal of cardiovascular electrophysiology.

Comparison of left atrial volumes and function by real-time three-dimensional echocardiography in patients having catheter ablation for atrial fibrillation with persistence of sinus rhythm versus recurrent atrial fibrillation three months later.

Katja Zeppenfeld, Jeroen J. Bax, Eric Boersma, 2008, The American journal of cardiology.

Transcatheter aortic valve implantation: role of multimodality cardiac imaging

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2010, Expert review of cardiovascular therapy.

Optimal left ventricular lead position predicts reverse remodeling and survival after cardiac resynchronization therapy.

Jeroen J. Bax, Eric Boersma, Martin J Schalij, 2008, Journal of the American College of Cardiology.

Comparison of Aortic Root Dimensions and Geometries Before and After Transcatheter Aortic Valve Implantation by 2- and 3-Dimensional Transesophageal Echocardiography and Multislice Computed Tomography

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2010, Circulation. Cardiovascular imaging.

Recurrent Implantable Cardioverter‐Defibrillator Replacement Is Associated with an Increasing Risk of Pocket‐Related Complications

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2010, Pacing and clinical electrophysiology : PACE.

Usefulness of tissue Doppler velocity and strain dyssynchrony for predicting left ventricular reverse remodeling response after cardiac resynchronization therapy.

Jeroen J. Bax, John Gorcsan, Martin J Schalij, 2007, The American journal of cardiology.

Prevalence of Coronary Artery Disease Assessed by Multislice Computed Tomography Coronary Angiography in Patients With Paroxysmal or Persistent Atrial Fibrillation

Oliver Gaemperli, Jeroen J. Bax, Juhani Knuuti, 2009, Circulation. Cardiovascular imaging.

Noninvasive Imaging in Cardiac Resynchronization Therapy—Part 1: Selection of Patients

Jeroen J. Bax, Theodore P Abraham, Martin J Schalij, 2008, Pacing and clinical electrophysiology : PACE.

Implantable cardioverter-defibrillator longevity under clinical circumstances: an analysis according to device type, generation, and manufacturer.

SumChe Man, Martin J Schalij, M. Schalij, 2012, Heart rhythm.

Dispersion of repolarization in cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, Cees A Swenne, 2005, Heart rhythm.

Assessment of left ventricular dyssynchrony by speckle tracking strain imaging comparison between longitudinal, circumferential, and radial strain in cardiac resynchronization therapy.

Jeroen J. Bax, Martin J Schalij, M. Schalij, 2008, Journal of the American College of Cardiology.

Real-time integration of intracardiac echocardiography and multislice computed tomography to guide radiofrequency catheter ablation for atrial fibrillation.

Katja Zeppenfeld, Jeroen J. Bax, Martin J Schalij, 2008, Heart rhythm.

Influence of the vectorcardiogram synthesis matrix on the power of the electrocardiogram-derived spatial QRS-T angle to predict arrhythmias in patients with ischemic heart disease and systolic left ventricular dysfunction.

SumChe Man, Martin J Schalij, Cees A Swenne, 2011, Journal of electrocardiology.

Noninvasive Evaluation of Coronary Sinus Anatomy and Its Relation to the Mitral Valve Annulus: Implications for Percutaneous Mitral Annuloplasty

Jeroen J. Bax, Martin J Schalij, Albert de Roos, 2007, Circulation.

Echocardiographic evaluation of cardiac resynchronization therapy: ready for routine clinical use? A critical appraisal.

Christophe Leclercq, Jeroen J. Bax, Martin J Schalij, 2004, Journal of the American College of Cardiology.