1. Division of Infectious Diseases Department I of Internal Medicine University of Cologne Cologne Germany
2. Center for Molecular Medicine Cologne (CMMC) University of Cologne Cologne Germany
3. German Center for Infection Research (DZIF) Cologne Germany
4. Institute of Virology Faculty of Medicine and University Hospital of Cologne University of Cologne Cologne Germany
5. Immunobiology of Dendritic Cells Unit Inserm U1223 Institut Pasteur Paris Cedex 15 France
6. Department of General, Visceral Surgery and Cancer Surgery University Hospital Cologne Cologne Germany
7. Clinic for Gastroenterology and Hepatology University Hospital of Cologne Cologne Germany
8. Clinic for Coloproctology PanKlinik, Cologne Germany
9. Division of Infectious Diseases and Tropical Medicine University HospitalLMU Munich Munich Germany
10. German Center for Infection Research (DZIF) Munich Germany
11. Unité HIV Inflammation & Persistence Institut Pasteur Paris Cedex 15 France