P. Layer

J. Keller, P. Layer, 2005, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Indication for Pancreatic Enzyme Substitution following Small Intestinal Resection (Short Bowel Syndrome)

P. Layer, U. Melle, 2001, Pancreatology.

Enzyme Therapy in Chronic Pancreatitis

J. Keller, P. Layer, 1999 .

Pancreatic enzymes: secretion and luminal nutrient digestion in health and disease.

J. Keller, P. Layer, P. Layer, 1999, Journal of clinical gastroenterology.

Motor cycles and other cycles in chronic pancreatitis.

P. Layer, 1995, Gastroenterology.

Pancreatic enzymes in chronic pancreatitis

P. Layer, G. Holtmann, 1994, International journal of pancreatology : official journal of the International Association of Pancreatology.

Effects of Maldigestion on Upper Gut, Gallbladder, and Pancreatic Function

P. Layer, 1991 .

Management of irritable bowel syndrome with constipation: a flexible approach to treating a complex condition with multiple symptoms

P. Layer, 2013, Expert review of gastroenterology & hepatology.

The spectrum and treatment of gastrointestinal disorders during pregnancy

J. Keller, P. Layer, D. Frederking, 2008, Nature Clinical Practice Gastroenterology &Hepatology.

Laparoscopic fundoplication: Nissen versus Toupet two-year outcome of a prospective randomized study of 200 patients regarding preoperative esophageal motility

C. Zornig, C. Fibbe, P. Layer, 2007, Surgical Endoscopy.

[Recurrent gastroparesis following abdominal irradiation. Therapy with cisapride].

P. Layer, S. Petrasch, H. Goebell, 1989, Zeitschrift fur Gastroenterologie.

Human pancreatic secretion during phase II antral motility of the interdigestive cycle.

E. Dimagno, P. Layer, V. Go, 1988, The American journal of physiology.

The perceived effect of various foods and beverages on stool consistency

J. Keller, P. Layer, S. Müller-lissner, 2005, European journal of gastroenterology & hepatology.

Workup of a patient with a mass in the head of the pancreas.

J. Barkin, E. Dimagno, P. Layer, 1998, Pancreas.

Fate of pancreatic enzymes during small intestinal aboral transit in humans.

E. Dimagno, P. Layer, V. Go, 1986, The American journal of physiology.

Pancreatic enzyme supplementation therapy

J. Keller, P. Layer, 2003, Current treatment options in gastroenterology.

Functional bowel disorders in adults.

P. Henningsen, P. Layer, W. Häuser, 2012, Deutsches Arzteblatt international.

Circadian pancreatic enzyme pattern and relationship between secretory and motor activity in fasting humans.

J. Keller, P. Layer, 2002, Journal of applied physiology.

Effects of experimental chronic hypercalcemia on feline exocrine pancreatic secretion.

P. Layer, H. Goebell, J. Hotz, 1982, Gastroenterology.

The different courses of early- and late-onset idiopathic and alcoholic chronic pancreatitis.

E. Dimagno, P. Layer, J. Clain, 1994, Gastroenterology.

Pancreatic and Gastric Responses to Gastric versus Jejunal Beer in Humans

P. Layer, M. Singer, H. Goebell, 1988, Pancreas.

Role of Pancreatic Enzymes in Acute Pancreatitis

P. Layer, M. Singer, H. Goebell, 1986 .

Severe Acute Pancreatitis: Nonsurgical Treatment of Infected Necroses

G. Gerken, P. Layer, W. Niebel, 2005, Pancreas.

Advances in the diagnosis and classification of gastric and intestinal motility disorders

Michael Camilleri, Carolina Malagelada, Mark Fox, 2018, Nature Reviews Gastroenterology & Hepatology.

Tests of pancreatic exocrine function - clinical significance in pancreatic and non-pancreatic disorders.

J. Mayerle, M. Lerch, J. Keller, 2009, Best practice & research. Clinical gastroenterology.

Review article: rifaximin, a minimally absorbed oral antibacterial, for the treatment of travellers’ diarrhoea

P. Layer, V. Andresen, V Andresen, 2010, Alimentary pharmacology & therapeutics.

13C-Mixed Triglyceride Breath Test for Evaluation of Pancreatic Exocrine Function in Diabetes Mellitus

J. Keller, U. Rosien, P. Layer, 2014, Pancreas.

S3-Leitlinie „Helicobacter pylori und gastroduodenale Ulkuskrankheit” der Deutschen Gesellschaft für Verdauungs- und Stoffwechselkrankheiten (DGVS)

P. Malfertheiner, S. Suerbaum, U. Rosien, 2009, Zeitschrift fur Gastroenterologie.

Irritable Bowel Syndrome—The Main

J. Keller, P. Layer, J. Preiß, 2011 .

Irritable bowel syndrome diagnosis and management: A simplified algorithm for clinical practice

P. Whorwell, P. Moayyedi, P. Layer, 2017, United European gastroenterology journal.

Elan study proves symptomatic benefit of Helicobacter pylori eradication in functional dyspepsia(FD)

P. Malfertheiner, M. Stolte, A. Leodolter, 2000 .

Effects of 5-hydroxytryptamine (serotonin) type 3 antagonists on symptom relief and constipation in nonconstipated irritable bowel syndrome: a systematic review and meta-analysis of randomized controlled trials.

M. Camilleri, V. Montori, J. Keller, 2008, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Pancreatic Acinar Cell Carcinoma with Excessive Alpha-Fetoprotein Expression

U. Rosien, P. Layer, G. Klöppel, 2007, Pancreatology.

[S3-Consensus guidelines on definition, etiology, diagnosis and medical, endoscopic and surgical management of chronic pancreatitis German Society of Digestive and Metabolic Diseases (DGVS)].

H. Friess, A. Schreyer, J. Izbicki, 2012, Zeitschrift fur Gastroenterologie.

Altered postprandial motility in chronic pancreatitis: role of malabsorption.

J. Holst, P. Layer, G. Holtmann, 1997, Gastroenterology.

Bile secretion in acute and chronic hypercalcemia in the cat

P. Layer, H. Goebell, J. Hotz, 1986, Digestive Diseases and Sciences.

Medical Therapy of Constipation: Current Standards and Beyond

P. Layer, V. Andresen, 2018, Visceral Medicine.

Update Gastroenterologie 1997—Teil II

C. Ell, J. Schölmerich, P. Layer, 1998, Medizinische Klinik.

[1997 gastroenterology update--II].

C. Ell, J. Schölmerich, P. Layer, 1998, Medizinische Klinik.

Diagnostic dilemma in pancreatic lymphoma

P. Layer, E. Cario, K. Metz, 1997, International journal of pancreatology : official journal of the International Association of Pancreatology.

Heat-inactivated Bifidobacterium bifidum MIMBb75 (SYN-HI-001) in the treatment of irritable bowel syndrome: a multicentre, randomised, double-blind, placebo-controlled clinical trial.

P. Layer, V. Andresen, J. Gschossmann, 2020, The lancet. Gastroenterology & hepatology.

European society of neurogastroenterology and motility guidelines on functional constipation in adults

P. Whorwell, G. Rogler, P. Ducrotte, 2019, Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society.

[Efficacy of freeze-dried Lactobacilli in functional diarrhoe: a pilot study].

J. Keller, P. Layer, D. Menge, 2012, Deutsche medizinische Wochenschrift.

Paraprobiotics for irritable bowel syndrome: all that glitters is not gold - Authors' reply.

P. Layer, V. Andresen, J. Gschossmann, 2020, The lancet. Gastroenterology & hepatology.

[Irritable bowel syndrome: German consensus guidelines on definition, pathophysiology and management].

P. Enck, J. Langhorst, H. Mönnikes, 2011, Zeitschrift fur Gastroenterologie.

ESPEN guidelines on nutrition in acute pancreatitis

H. Friess, J. Macfie, L. Gullo, 2002 .

Review article: linaclotide for the management of irritable bowel syndrome with constipation

P. Layer, V. Stanghellini, 2014, Alimentary pharmacology & therapeutics.

Management of the short bowel syndrome after extensive small bowel resection.

J. Keller, P. Layer, Jutta Keller, 2004, Best practice & research. Clinical gastroenterology.

Tegaserod in the treatment of irritable bowel syndrome (IBS) with constipation as the prime symptom

J. Keller, P. Layer, A. Kreiss, 2007, Therapeutics and clinical risk management.

Should Patients With a Strong Family History of Pancreatic Cancer Be Screened on a Periodic Basis for Cancer of the Pancreas?

J. Barkin, M. Canto, E. Dimagno, 2009, Pancreas.

Two molecular forms of Peptide YY (PYY) are abundant in human blood: characterization of a radioimmunoassay recognizing PYY 1–36 and PYY 3–36

C. Beglinger, P. Layer, J. Reeve, 1994, Regulatory Peptides.

Intestinal and anorectal motility and functional disorders.

J. Keller, P. Layer, 2009, Best practice & research. Clinical gastroenterology.

A new molecular form of PYY: Structural characterization of human PYY(3–36) and PYY(1–36)

Terry D. Lee, P. Layer, J. Shively, 1989, Peptides.

Helicobacter pylori eradication is beneficial in the treatment of functional dyspepsia

P. Malfertheiner, A. Leodolter, P. Layer, 2003, Alimentary pharmacology & therapeutics.

English language version of the S3-consensus guidelines on chronic pancreatitis: Definition, aetiology, diagnostic examinations, medical, endoscopic and surgical management of chronic pancreatitis

H. Friess, J. Werner, A. Schreyer, 2015, Zeitschrift für Gastroenterologie.

The effect of small amounts of alcohol on the clinical course of chronic pancreatitis.

E. Dimagno, P. Layer, M. Imoto, 2001, Mayo Clinic proceedings.

Chronic Pancreatitis: Search for Animal Models

P. Layer, M. Singer, H. Goebell, 1990 .

Determinant-Based Classification of Acute Pancreatitis Severity: An International Multidisciplinary Consultation

John A. Windsor, David C. Whitcomb, Maxim S. Petrov, 2012, Annals of surgery.

Does Infected Pancreatic Necrosis Require Immediate or Emergency Debridement?

J. Neoptolemos, S. Connor, P. Layer, 2006, Pancreas.

Classifying the severity of acute pancreatitis: towards a way forward.

J. Windsor, P. Garg, P. Layer, 2015, Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.].

Diagnosis of Pancreatic Pseudocysts

P. Layer, D. Grandt, 1993 .

Nonsurgical management of acute pancreatitis. Use of antibiotics.

P. Layer, M. Rünzi, 1999, The Surgical clinics of North America.

Stimulatory Effect of Hypercalcemia on Pancreatic Secretion Is Prevented by Pretreatment With Cholecystokinin and Cholinergic Agonists

P. Layer, H. Goebell, J. Hotz, 1986, Pancreas.

Circadian coupling between pancreatic secretion and intestinal motility in humans.

J. Keller, P. Layer, G. Gröger, 2001, American journal of physiology. Gastrointestinal and liver physiology.

Oral Pancreatic Function Tests in the Diagnosis and Staging of Chronic Pancreatitis

P. Layer, M. Rünzi, 1997 .

A simple index on the day of admission which predicts outcome in acute pancreatitis

P. Layer, 2008, Gut.

Pancreatic Enzyme Replacement Therapy in Patients With Exocrine Pancreatic Insufficiency Due to Chronic Pancreatitis: A 1-Year Disease Management Study on Symptom Control and Quality of Life

J. D'haese, H. Friess, W. Uhl, 2014, Pancreas.

Effects of Systemic Administration of a Local Anesthetic on Pain in Acute Pancreatitis: A Randomized Clinical Trial

C. Ell, J. Keller, P. Layer, 2011, Pancreas.

Every slow-wave impulse is associated with motor activity of the human stomach.

Andreas Stallmach, J. Keller, P. Layer, 2009, American journal of physiology. Gastrointestinal and liver physiology.

Diagnosis of chronic pancreatitis

Z. Liao, Wen‐Bin Zou, Jin-Huan Lin, 1979 .

[International multidisciplinary classification of acute pancreatitis severity: the 2013 Spanish edition].

J. Windsor, P. Layer, T. Shimosegawa, 2014, Medicina intensiva.

ESPEN guidelines on nutrition in acute pancreatitis. European Society of Parenteral and Enteral Nutrition.

H. Friess, J. Macfie, L. Gullo, 2002, Clinical nutrition.

Early and late onset in idiopathic and alcoholic chronic pancreatitis. Different clinical courses.

E. Dimagno, P. Layer, P. Layer, 1999, The Surgical clinics of North America.

The Different Courses of Early- and Late-Onset Alcoholic Chronic Pancreatitis Idiopathic and

E. Dimagno, P. Layer, J. Clain, 1994 .

[Determinant-based classification of acute pancreatitis severity. International multidisciplinary classification of acute pancreatitis severity: the 2013 German edition].

J. Windsor, P. Layer, T. Shimosegawa, 2013, Zeitschrift fur Gastroenterologie.

P. Layer, M. Singer, 1990 .

[Etiology, pathogenesis and pathophysiology of acute pancreatitis].

P. Layer, M. Rünzi, 1997, Schweizerische medizinische Wochenschrift.

METHODS AND PRINCIPLES OF PANCREATIC FUNCTION TESTS

J. Keller, P. Layer, Henrike von Schassen, 2013 .

Consensus guidelines for the use of bowel preparation prior to colonic diagnostic procedures: colonoscopy and small bowel video capsule endoscopy

C. Crosta, D. Heresbach, C. Boustière, 2013, Current medical research and opinion.

Contribution of pancreatic enzyme replacement therapy to survival and quality of life in patients with pancreatic exocrine insufficiency

P. Layer, N. Gubergrits, N. Kashirskaya, 2019, World journal of gastroenterology.

Randomized, controlled trial of 2 L polyethylene glycol plus ascorbate components versus sodium phosphate for bowel cleansing prior to colonoscopy for cancer screening

C. Ell, P. Layer, W. Fischbach, 2014, Current medical research and opinion.

Meta-analysis: efficacy of small bowel preparation for small bowel video capsule endoscopy

C. Crosta, P. Layer, W. Fischbach, 2012, Current medical research and opinion.

Rationale und rationelle Diagnostik in unterschied-lichen Krankheitsphasen des Morbus Crohn Rational and Efficient Diagnosis in Different Stages of Crohn ’ s Disease

P. Layer, N. Teich, A. Stallmach, 2012 .

Post-infectious irritable bowel syndrome (PI-IBS) after infection with Shiga-like toxin-producing Escherichia coli (STEC) O104:H4: A cohort study with prospective follow-up

B. Löwe, M. Rose, P. Layer, 2016, United European gastroenterology journal.

Gastric emptying and disease activity in inflammatory bowel disease

C. Beglinger, J. Keller, P. Layer, 2015, European journal of clinical investigation.

Mechanisms of gastric emptying disturbances in chronic and acute inflammation of the distal gastrointestinal tract.

J. Holst, C. Beglinger, J. Keller, 2009, American journal of physiology. Gastrointestinal and liver physiology.

Influence of clinical parameters on the results of 13C‐octanoic acid breath tests: examination of different mathematical models in a large patient cohort

M. Camilleri, J. Keller, P. Layer, 2009, Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society.

Short-bowel syndrome: an update on the therapeutic approach.

P. Layer, A. Dignass, A. Sturm, 1997, Scandinavian journal of gastroenterology.

Inhibition of human pancreatic and biliary output but not intestinal motility by physiological intraileal lipid loads.

J. Holst, J. Keller, P. Layer, 2006, American journal of physiology. Gastrointestinal and liver physiology.

Management of Reflux Symptoms with Over-the-Counter Proton Pump Inhibitors: Issues and Proposed Guidelines

R. Hunt, P. Malfertheiner, J. Andrews, 2009, Digestion.

Do Elevated Plasma Vasoactive Intestinal Polypeptide (VIP) Levels Cause Small Intestinal Motor Disturbances in Humans?

J. Keller, C. Fibbe, U. Rosien, 2005, Digestive Diseases and Sciences.

Prolonged measurement improves the assessment of the barrier function of the esophago‐gastric junction by high‐resolution manometry

M. Fox, J. Keller, P. Layer, 2017, Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society.

In vitro stimulation of pancreatic enzyme discharge by calcium.

P. Layer, L. Cherian, H. Goebell, 1987, Gut.

S2k-Leitlinie Chronische Obstipation: Definition, Pathophysiologie, Diagnostik und Therapie

P. Enck, M. Sailer, H. Mönnikes, 2013, Zeitschrift für Gastroenterologie.

p53 autoantibodies in patients with autoimmune diseases: a quantitative approach.

P. Layer, A. Kromminga, H. Kuhn, 1999, Autoimmunity.

Simultaneous non-invasive measurement of liquid gastric emptying and small bowel transit by combined 13C-acetate and H2-lactulose breath test

J. Keller, P. Layer, V. Andresen, 2014, Journal of breath research.

Effects of neurokinins on human colonic motility

P. Layer, J. Erhard, E. Mayer, 1994 .

Irritable bowel syndrome--the main recommendations.

J. Keller, P. Layer, J. Preiß, 2011, Deutsches Arzteblatt international.

Natural histories of alcoholic and idiopathic chronic pancreatitis.

E. Dimagno, P. Layer, 1996, Pancreas.

[Chronic intestinal pseudo-obstruction: pathogenesis, diagnosis and therapy].

J. Keller, P. Layer, 2002, Zeitschrift fur Gastroenterologie.

Nissen vs toupet laparoscopic fundoplication

C. Zornig, C. Fibbe, P. Layer, 2002, Surgical Endoscopy and Other Interventional Techniques.

[The therapy of acute pancreatitis. General guidelines. Working group of the Society for Scientific-Medical Specialties].

M. Büchler, W. Schmiegel, P. Layer, 2000, Zeitschrift fur Gastroenterologie.

Gastroparesis after radiation

P. Layer, H. Goebell, P. Demol, 1986, Digestive Diseases and Sciences.

Multi-omic based molecular profiling of advanced cancer identifies treatable targets and improves survival in individual patients

C. Bokemeyer, H. Juhl, C. Zornig, 2018, Oncotarget.

Pancreatic Exocrine Insufficiency as a Complication of Gastrointestinal Surgery and the Impact of Pancreatic Enzyme Replacement Therapy

M. Lerch, P. Layer, A. Chaudhary, 2019, Digestive Diseases.

A Modified 13C-Mixed Triglyceride Breath Test Detects Moderate Pancreatic Exocrine Insufficiency

J. Keller, P. Layer, C. Jahr, 2011, Pancreas.

Duodenal and ileal nutrient deliveries regulate human intestinal motor and pancreatic responses to a meal.

J. Keller, P. Layer, H. Goebell, 1997, The American journal of physiology.

Peptide YY Inhibits Exocrine Pancreatic Secretion in Isolated Perfused Rat Pancreas by Y1 Receptors

P. Layer, J. Reeve, D. Grandt, 1995, Pancreas.

Paralytic ileus responding to somatostatin therapy: First manifestation of a VIPoma

P. Layer, M. Singer, K. Balzer, 1989, Digestive Diseases and Sciences.

Guidelines of the DGVS

T. Sauerbruch, M. Zeitz, W. Schmiegel, 2000 .

Tegaserod: Long-Term Treatment for Irritable Bowel Syndrome Patients with Constipation in Primary Care

J. Keller, P. Layer, S. Mueller-Lissner, 2005, Digestion.

[Consensus report: irritable bowel syndrome--definition, differential diagnosis, pathophysiology and therapeutic possibilities. Consensus of the German Society of Digestive and Metabolic Diseases].

P. Enck, P. Layer, G. Holtmann, 1999, Zeitschrift fur Gastroenterologie.

S3-guideline "helicobacter pylori and gastroduodenal ulcer disease" of the German society for digestive and metabolic diseases (DGVS) in cooperation with the German society for hygiene and microbiology, society for pediatric gastroenterology and nutrition e. V., German society for rheumatology, AWMF

J. Bornschein, P. Malfertheiner, S. Suerbaum, 2009, Zeitschrift fur Gastroenterologie.

The patient with slightly elevated pancreatic enzymes and abdominal complaints.

J. Keller, U. Rosien, P. Layer, 2007, Best practice & research. Clinical gastroenterology.

Chronic pancreatitis: faces, facets, and facts.

J. Keller, P. Layer, 2006, Swiss medical weekly.

Ileal inhibition and modulation of carbachol-stimulated proximal small intestinal motor functions in humans.

P. Layer, G. Gröger, L. Cherian, 1996, Zeitschrift fur Gastroenterologie.

[Effect of an acid protected, micro-encapsulated pancreatin preparation on pancreatogenic steatorrhea].

P. Layer, H. Goebell, C. Kölbel, 1986, Medizinische Klinik.

The Prevalence, Comorbidity, Management and Costs of Irritable Bowel Syndrome.

P. Layer, W. Häuser, U. Marschall, 2019, Deutsches Arzteblatt international.

Remote magnetic control of a wireless capsule endoscope in the esophagus is safe and feasible: results of a randomized, clinical trial in healthy volunteers.

Paul Swain, Frank Volke, P. Swain, 2010, Gastrointestinal endoscopy.

Efficacy and tolerability of linaclotide in the treatment of irritable bowel syndrome with constipation in a real‑world setting – results from a German noninterventional study

P. Layer, S. Miehlke, V. Andresen, 2018, Zeitschrift für Gastroenterologie.

[Motility disorders of the small intestine].

J. Keller, P. Layer, 2015, Der Internist.

Discovery of a new molecular form of neuropeptide Y from procine brain, NPY 3–36, which selectively binds to Y2 receptors

P. Layer, W. Rascher, F. Feth, 1992, Regulatory Peptides.

[Are proton pump inhibitors superior to H2 receptor antagonists within the scope of H. pylori eradication therapy? Meta analysis of current parallel group comparisons].

P. Layer, H. Goebell, G. Holtmann, 1996, Zeitschrift für Gastroenterologie - German Journal of Gastroenterology.

Proton-pump inhibitors or H2-receptor antagonists for Helicobacter pylori eradication—a meta-analysis

P. Layer, G. Holtmann, H. Goebell, 1996, The Lancet.

Sensitivity and specificity of an abbreviated 13C-mixed triglyceride breath test for measurement of pancreatic exocrine function

J. Keller, U. Rosien, P. Layer, 2014, United European gastroenterology journal.

Moderne Therapie der Obstipation

P. Layer, D. Menge, V. Andresen, 2017, DMW - Deutsche Medizinische Wochenschrift.

Efficacy, safety and biological profile of a new 2-litre gut cleansing solution with PEG3350 plus electrolytes in risk groups undergoing colonoscopy

C. Ell, P. Layer, W. Fischbach, 2005 .

Controversies in clinical pancreatology. The management of severe gallstone pancreatitis.

J. Neoptolemos, P. Layer, W. Steinberg, 2001, Pancreas.

S3 Guideline of DGVS and DGNM "Definition, Pathophysiology, Diagnostic and Therapy of Intestinal Motility Disturbance"

J. Keller, P. Layer, J. Preiß, 2011 .

[S3 guideline of the German Society for Digestive and Metabolic Diseases (DGVS) and the German Society for Neurogastroenterology and Motility (DGNM) to the definition, pathophysiology, diagnosis and treatment of intestinal motility].

I. R. van der Voort, J. Keller, P. Layer, 2011, Zeitschrift fur Gastroenterologie.

M. Camilleri, V. Montori, J. Keller, 2008, Clinical Gastroenterology and Hepatology.

[International multidisciplinary classification of acute pancreatitis severity: the 2013 Spanish edition].

P. Layer, T. Shimosegawa, A. Siriwardena, 2014, Medicina Intensiva.

Peptide YY inhibits low-dose but not high-dose CCK-stimulated pancreatic enzyme secretion in humans

C. Beglinger, P. Layer, H. Goebell, 1995 .

[The terminal ileum as a co-regulator of cyclic interdigestive pancreatic secretion in man].

P. Layer, G. Gröger, L. Cherian, 1993, Medizinische Klinik.

[Intestinal regulation of pancreatic enzyme secretion: stimulatory and inhibitory mechanisms].

P. Layer, 1992, Zeitschrift fur Gastroenterologie.

Advances in the diagnosis and classification of gastric and intestinal motility disorders

M. Fox, P. Dinning, H. Parkman, 2018, Nature Reviews Gastroenterology & Hepatology.

Simultaneous non-invasive measurement of liquid gastric emptying and small bowel transit by combined 13C-acetate and H2-lactulose breath test

J. Keller, P. Layer, V. Andresen, 2014, Journal of breath research.

Reizdarmsyndrom – eine Krankheit

P. Layer, V. Andresen, P. Layer, 2018, DMW - Deutsche Medizinische Wochenschrift.

[International multidisciplinary classification of acute pancreatitis severity: the 2013 Spanish edition].

P. Layer, T. Shimosegawa, A. Siriwardena, 2014, Medicina intensiva.