1. Department of Medicine I University Hospital Bonn Bonn Germany
2. Center for HIV and Hepatogastroenterology Düsseldorf Germany
3. Infektiologikum Frankfurt am Main Germany
4. Studiengesellschaft Warschauer 33 mbH, c/o Praxis Dr. Cordes Berlin Germany
5. Schwerpunktpraxis für Infektionsmedizin Berlin Germany
6. Dr. Scholten und Schneeweiß GbR Cologne Germany
7. Praxis City Ost Berlin Germany
8. Department of Gastroenterology, Hepatology and Endocrinology Hannover Medical School (MHH) Hannover Germany
9. Centre for individualised infection Medicine (CiiM) Hannover Germany
10. Center for infectious diseases Berlin Germany