1. National Center for Complementary and Alternative Medicine. What is complementary and alternative medicine? 2011. Available from: http://nccam.nih.gov/health/whatiscam/ [accessed 5.09.11].
2. Manheimer E, Berman B. Cochrane complementary medicine field; 2011. Available from: http://onlinelibrary.wiley.com/o/cochrane/clabout/articles/CE000052/frame.html [accessed 6.09.11].
3. National Center for Complementary and Alternative Medicine. The use of complementary and alternative medicine in the United States; 2008. Available from: http://nccam.nih.gov/news/camstats/2007/camsurvey_fs1.htm [accessed 20.05.12].
4. Patterns of complementary and alternative medicine use amongst outpatients in Tokyo, Japan;Hori;BMC Complementary and Alternative Medicine,2008
5. Use of complementary and alternative medicine by cancer patients at Zhejiang University Teaching Hospital Zhuji Hospital, China;Teng;African Journal of Traditional, Complementary, and Alternative Medicines,2010