1. Surveillance, Epidemiology, and End Results Program: Quality Control Activities. NIH Publication no. 05-4772; September 2005.
2. United States Cancer Statistics: 1999–2005 Incidence and Mortality Web-Based Report,2009
3. Standards for Cancer Registries Volume III: Standards for Completeness, Quality, Analysis, Management, Security, and Confidentiality of Data,2008
4. Johnson CF, editor. The SEER Program Coding and Staging Manual 2004, Revision 1. National Cancer Institute, NIH Publication number 04-5581, Bethesda, MD; 2004. pp. 3, 11, 12, 31, 104, 112, 127, 130, 137, 208, 601.
5. SEER Extent of Disease 1988;Shambaugh,1992