- Correspondence to Arne Johan Norheim, The National Research Center in Complementary and Alternative Medicine (NAFKAM), University of Tromsø, 9037 Tromsø, Norway.
- Accepted 2 February 2011
- Published online 7 March 2011.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.