1. National Center for Complementary and Alternative Medicine: What is CAM? Available at http://nccam.nih.gov/heath/whatiscam. Accessed April 2004.
2. Unconventional medicine in the United States. Prevalence, costs, and patterns of use;Eisenberg;N Engl J Med,1983
3. Trends in alternative medicine use in the United States, 1990-1997: results of a follow-up national survey;Eisenberg;J Am Med Assoc,1998
4. Barnes P, Powell-Griner E, McFann K et al: CDC advance data report #343. Complementary and alternative medicine use among adults: United States, 2002. May 27, 2004. Available at http://nccam.nih.gov/new/camstats.htm. Accessed July 2004.
5. Alternative medicine: should it be used by children?;Spigelblatt;Curr Probl Pediatr,1995