1. Regensburg Department of Public Health, Altmühlstraße 3, Regensburg, Germany
2. Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
3. Department of Internal Medicine 3, University Hospital Regensburg, Regensburg, Germany
4. Department of Infection Prevention and Infectious Diseases, University Hospital Regensburg, Regensburg, Germany