1. Australian Research Centre in Complementary and Integrative Medicine (ARCCIM), Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia
2. School of Nursing and Midwifery, University of South Australia, Adelaide, South Australia, Australia
3. Research Group for Studies of Integrative Health Care, Karolinska Institutet, Solna, Sweden
4. Department of Internal and Integrative Medicine, Kliniken Essen-Mitte, University of Duisburg-Essen, Essen, Germany