1. School of Social Sciences and European Office of the Samueli Institute for Information Biology, University of Northampton, Northampton, UK, , Academic Section on the Evaluation of Complementary Medicine, Institute for Environmental Medicine and Hospital Epidemiology, University Hospital Freiburg, Freiburg, Germany
2. Health Center Socrates, Güttingen, Switzerland
3. Malvern, Worcester, UK
4. Department of Human Sciences, University Osnabrück, Osnabrück, Germany