1. United States Cancer Statistics: 1999-2006 incidence and mortality web-based report,2010
2. Centers for Disease Control and Prevention. National Program of Cancer Registries. Available from: URL:http://www.cdc.gov/cancer/npcr/about.htm. Accessed November 13, 2010.
3. National Cancer Institute. Surveillance, Epidemiology, and End Results. Overview of the SEER Program. Available from: URL:http://seer.cancer.gov/about/overview.html. Accessed November 13, 2010.
4. Kostecki J. American Academy of Dermatology Association’s dermatology practice profile survey 2009 report. Schaumburg (IL): 2009. Available to academy members from: URL:http://www.aad.org/research/surveys.html. Accessed November 13, 2010.
5. The independent pathology laboratory as a reporting source for cutaneous melanoma incidence in Iowa, 1977-1994;Merlino;J Am Acad Dermatol,1997