1. 1st Department of Internal Medicine, University of Cologne, Cologne, Germany,
2. Klinik für Hämatologie, Onkologie und Tumorimmunologie, HELIOS Klinikum Berlin Buch, Berlin, Germany,
3. German Centre for Infection Research at Cologne, Germany, and
4. Clinical Trials Centre Cologne, ZKS Köln, BMBF 01KN1106, and Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany