Vinjar Fønnebø, Sameline Grimsgaard, Harald Walach, Cheryl Ritenbaugh, Arne Johan Norheim, Hugh MacPherson, George Lewith, Laila Launsø, Mary Koithan, Torkel Falkenberg, Heather Boon, Mikel Aickin,
Researching complementary and alternative treatments – the gatekeepers are not at home BMC Medical Research Methodology. ,vol. 7, pp. 7- 7 ,(2007) ,
10.1186/1471-2288-7-7