1. Heart Disease and Stroke Statistics—2014 Update: A Report From the American Heart Association;AS Go,2014
2. National Hospital Ambulatory Medical Care Survey: 2007 Emergency Department Summary;R Niska,2010
3. ACCF/ASE/AHA/ASNC/HFSA/HRS/SCAI/SCCM/SCCT/SCMR 2011 Appropriate Use Criteria for Echocardiography,2011
4. Utility of observation units for young emergency department chest pain patients;S Ely,2013
5. Comparative effectiveness of diagnostic testing strategies in emergency department patients with chest pain: An analysis of downstream testing, interventions, and outcomes;AJ Foy,2015