1. Institute for Healthcare Management and Research, University of Duisburg-Essen, Essen, Germany
2. MUC Research GmbH, Munich, Germany
3. ClinovateNET GmbH & Co KG, Munich, Germany
4. Novopraxis Berlin GbR, Berlin, Germany
5. Infektionsmedizinisches Centrum Hamburg, Hamburg, Germany
6. German Association of Physicians specialized in HIV Care e.V., Berlin, Germany