1. Abelson, R. (2006). Heart procedure is off the charts in an Ohio City. New York Times, August 18.
2. Using alternative statistical formats for presenting risks and risk reductions;Akl;Cochrane Database of Systematic Reviews,2011
3. Appropriate use criteria for echocardiography;American College of Cardiology Foundation, Appropriate Use Criteria Task Force;Journal of the American College of Cardiology,2011
4. AJCC cancer staging manual;American Joint Committee on Cancer,2010
5. Use of intensive care at the end of life in the United States: An epidemiologic study;Angus;Critical Care Medicine,2004