Safdar, Basmah, Sarah K. Bezek, Albert J. Sinusas, Raymond R. Russell, Matthew R. Klein, James D. Dziura, and Gail D'Onofrio. "Elevated CK-MB with a normal troponin does not predict 30-day adverse cardiac events in emergency department chest pain observation unit patients." Critical pathways in cardiology 13, no. 1 (2014): 14-9.