1. U.S. Department of Health and Human Services, Administration on Aging. A profile of older Americans: 2004. Available at: www.aoa.gov. Accessed on January 11, 2006.
2. United States Life Tables, 2002;Arias;National Vital Statistics Reports,2004
3. United States Cancer Statistics 2002. Available at: www.cdc.gov/cancer/npcr/uscs. Accessed on December 10, 2005.
4. Thoracic surgery in the elderly;Loran;J Am Coll Surg,2004
5. Surgical problems in octogenarians: epidemiological analysis of 1,083 consecutive admissions;Reiss;World J Surg,1992