1. Department of General Practice, University Medical Center, Göttingen, Germany
2. Department of Geriatrics, University Medical Center Göttingen, Göttingen, Germany
3. Department of Computer Science, Ostfalia University of Applied Sciences, Wolfenbuettel, Germany
4. Biostatistics Group, Helmholtz Centre for Infecwetion Research, Braunschweig, Germany
5. Department of Rheumatology and Immunology, Hannover Medical School, Hannover, Germany
6. German Center for Infection Research (DZIF), Partner site Hannover-Braunschweig, Brunswick, Germany
7. Department of Hematology and Medical Oncology, University Medical Center Göttingen, Göttingen, Germany
8. Department of Family Medicine, College of Human Medicine, Michigan State University, Grand Rapids, MI, USA