1. Division of Nephrology, University Hospital Zurich, Zurich, Switzerland
2. STCS, Statistics and Data Management, University Hospital Basel, Basel, Switzerland
3. Transplantation Immunology and Nephrology, University Hospital Basel, Basel, Switzerland
4. Division of Nephrology/Transplantation Medicine, Kantonsspital St. Gallen, St. Gallen, Switzerland
5. Department of Nephrology and Hypertension, University Hospital Bern, Bern, Switzerland
6. Department of Nephrology and Transplantation Center, CHUV University Hospital, Lausanne, Switzerland
7. Division of Nephrology, University Hospital Geneva, Geneva, Switzerland
8. Department of Internal Medicine, Kantonsspital Graubünden, Chur, Switzerland
9. Nephrology, Kantonsspital Aarau, Aarau, Switzerland