1. US Census Bureau People QuickFacts. Available at http://quickfacts.census.gov/qfd/states/00000.html. Accessed August 28, 2005.
2. Physician characteristics and distribution in the US;Pasko,2005
3. Appendix II;Dunn;JAMA,1997
4. Appendix II;Dunn;JAMA,1998
5. Appendix II;Miller;JAMA,1999