1. Institute for Social Medicine, Epidemiology, and Health Economics Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
2. Institute for Health and Nursing Science Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
3. Institute for Complementary and Integrative Medicine University of Zurich and University Hospital Zurich Zurich Switzerland