1. Institute for Epidemiology, Social Medicine and Health Systems Research, Hannover Medical School, Hannover, Germany
2. Medizinische Klinik, Krankenhaus Nordwest, Frankfurt, Germany
3. ifi-Institut für interdisziplinäre Medizin, Hamburg, Germany
4. Center for HIV and Hepatogastroenterology, Duesseldorf, Germany
5. University Hospital Würzburg, Würzburg, Germany
6. Leberpraxis Hannover, Hannover, Germany
7. MVZ Frankfurt, Frankfurt am Main, Germany