1. Institute of Social Medicine, Epidemiology and Health Economics, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
2. Unit for Municipal Health Strategies for the City of Freiburg and the District of Breisgau-Hochschwarzwald, 79104 Freiburg, Germany
3. International Psychoanalytic University, 10555 Berlin, Germany
4. University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, 3000 Bern, Switzerland
5. Institute for Complementary and Integrative Medicine, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland
6. Institute for Clinical Epidemiology and Biometry, University of Wuerzburg, 97070 Wuerzburg, Germany
7. State Institute of Health, Bavarian Health and Food Safety Authority, 97688 Bad Kissingen, Germany