1. Walk In Ruhr (WIR) Center for Sexual Health and Medicine Bochum Germany
2. Interdisciplinary Immunological Outpatient Clinic Center for Sexual Health and Medicine Department of Dermatology, Venereology and Allergology Ruhr Universität Bochum Bochum Germany
3. Public Health Department Bochum Bochum Germany
4. Aids Service Organization Bochum e. V. Bochum Germany