1. Centers for Disease Control and Prevention. Heart failure fact sheet. Division of Heart Disease and Stroke Prevention website. Available at: http://www.cdc.gov/dhdsp/data_statistics/fact_sheets/fs_heart_failure.htm. Accessed August 12, 2012.
2. Heart disease and stroke statistics, 2011 update: a report from the American Heart Association [erratum in: Circulation. 2011;123:e240, and Circulation. 2011;124:e426];Roger;Circulation,2011
3. Disease statistics. National Heart Lung and Blood Institute website. Available at: http://www.nhlbi.nih.gov/about/factbook/chapter4.htm#4_5. Accessed October 12, 2011.
4. Current state of ventricular assist devices;Caccamo;Curr Heart Fail Rep,2011
5. US Department of Health & Human Services. 2011 Annual Report of the United States Organ Procurement and Transplantation Network website. Available at: http://optn.transplant.hrsa.gov/data/. Accessed October 10, 2011.