Stefan Mauss specialised in internal medicine and gastroenterology at the Heinrich-Heine University in Duesseldorf. He is a founding member of the Center for HIV and Hepatogastroenterology, an outpatient clinic and privately based research centre. His primary research interests are complications of antiretroviral therapy and their management In addition he focuses on treatment of viral hepatitis B or C in mono-or HIV-coinfected patients. Mauss has published numerous original articles and reviews in international journals and serves as reviewer for AIDS, Hepatology, JAIDS, Antiviral Therapy and other journals. He is a member of the National Steering Committee for Hepatitis Research (Kompetenznetz Hepatitis), a member of the organising committee of the International Workshop on Lipodystrophy and Adverse Drug Reactions and was a member of the Scientific Committee of the 1st European Consensus Conference on the Treatment of Chronic Hepatitis B and C in HIV Co-infected Patients. Dr. Stefan Mauss Zentrum für HIV und Hepatogastroenterologie Grafenberger Allee 128a 40237 Düsseldorf Phone +49 211 239552-0, -55 Fax +49 211 239552-10, -60