1. Osher Center for Integrative Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA.
2. Division of Preventive Medicine, Brigham and Women's Hospital, Boston, MA.
3. Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
4. Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
5. Institute for Complementary and Integrative Medicine, University Hospital Zurich, University of Zurich, Zürich, Switzerland.
6. Institute of Social Medicine, Epidemiology, and Health Economics, Charité–Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and the Berlin Institute of Health, Berlin, Germany.