| Recruiting | N/A | 3000 | Europe | | University of Zurich, Swiss HIV Cohort Study, Federal Office of Public Health, Switzerland, Positive Council Switzerland, Cantonal Hospital St. Gallen, University Hospital, University of Bern, Cantonal Hosptal, Baselland, University Hospital, Geneva, University of Lausanne Hospitals, University Hospital, Basel, Switzerland | HIV Preexposure Prophylaxis | 03/30 | 03/30 | | |