1. Complementary medicine - a definition;Ernst;Br J Gen Pract,1995
2. Trends in alternative medicine use in the United States. 1990-97;Eisenberg;JAMA,1998
3. The BBC survey of complementary medicine in the United Kingdom;Ernst;Compl Ther Med,2000
4. Complementary therapy: general practitioners’ referral and patients’ use in an urban multi-ethnic area;Grenfell;Comp Ther Med,1998
5. Entscheidung zur Komplementärmedizin: sachorientiert oder irrational?;Hentschel;Dtsch Med Wschr,1996