1. Department of Herbal Medicine and Nutritional Therapy, School of Life Sciences, University of Westminster, London, UK.
2. National Information Center for Complementary and Alternative Medicine, Norway (NIFAB), NAFKAM, University of Tromsø, Tromsø, Norway.
3. National Center for Complementary and Alternative Medicine, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD.
4. Faculty of Health, Center for Integrative Medicine, University of Witten/Herdecke, Herdecke, Germany.
5. National Institute of Complementary Medicine (NICM), University of Western Sydney, South Penrith, Australia.
6. Faculty of Health, University of Plymouth, Plymouth, UK.