Adnan Khalid

Acute mortality in hospitalized patients undergoing echocardiography with and without an ultrasound contrast agent: results in 18,671 consecutive studies.

A. Khalid, Philip G. Jones, M. Main, 2008, Journal of the American College of Cardiology.

Fragmented QRS and Mortality Risk in Patients With Left Ventricular Dysfunction

John A Spertus, Alan Wimmer, J. Spertus, 2010, Circulation. Arrhythmia and electrophysiology.

Hospital-wide code rates and mortality before and after implementation of a rapid response team.

John A Spertus, R. Berg, J. Spertus, 2008, JAMA.