[1] Department of Complementary Medicine,
[2] Postgraduate Medical School,undefined
[3] University of Exeter,undefined
[4] 25 Victoria Park Road,undefined
[5] Exeter,undefined
[6] EX2 4NT,undefined
[7] United Kingdom e-mail: E.Ernst@exeter.ac.uk,undefined
[8] Pharmaceutical Care Unit,undefined
[9] Scientific Institute of Dutch Pharmacists,undefined
[10] Alexanderstraat 11,undefined
[11] 2514 JL The Hague,undefined
[12] The Netherlands,undefined
[13] Medical Toxicology Unit,undefined
[14] Guy's and St Thomas' Hospital,undefined
[15] Avonley Road,undefined
[16] London SE14 5ER,undefined
[17] United Kingdom,undefined