1. Department of Internal Medicine IV, University Hospital Heidelberg, Heidelberg, Germany
2. Infections and Cancer Epidemiology, German Cancer Research Center (Deutsches Krebsforschungszentrum [DKFZ]), Heidelberg, Germany
3. Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
4. Institute of Medical Biometry and Informatics, University Hospital Heidelberg, Heidelberg, Germany
5. Department of Infectious Diseases, Virology, University Hospital Heidelberg, Heidelberg, Germany