1. Physical Chemistry II; Ruhr-Universität Bochum; Bochum Germany
2. Department of Dermatology; Institute of Clinical Research in Malmö; Lund University; Skåne University Hospital; Malmö Sweden
3. Department of Public Health Sciences; Karlstad University; Karlstad Sweden
4. Department of Dermatology; Ruhr-University Bochum; Bochum Germany
5. Competence Network for HIV/Aids; Ruhr-University Bochum; Bochum Germany