1. Institute of Primary Health Care Bern (BIHAM), University of Bern, Bern, Switzerland;
2. SempacherseePraxis, Oberkirch, Switzerland;
3. Primary Care Unit, Faculty of medicine, University of Geneva, Geneva, Switzerland;
4. Center for Primary Care Medicine, University of Basel, Basel, Switzerland;
5. Department of Ambulatory Care and Community Medicine, University Institute of Family Medicine, University of Lausanne, Lausanne, Switzerland;
6. Institute of Primary Care, University of Zurich, University Hospital Zurich, Zurich, Switzerland;
7. Arud Centres for Addiction Medicine, Zurich, Switzerland;
8. Department of Ambulatory Care and Community Medicine, French-speaking Switzerland Curriculum of Family Medicine, University of Lausanne, Lausanne, Switzerland