1. Department for General, Visceral, Thoracic, and Vascular Surgery, University Medical Center Bonn, Bonn, Germany.
2. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
3. Department of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
4. Department of Stem Cell Transplantation, Research Department Cell and Gene Therapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
5. German Center for Infection Research, Hamburg-Lübeck-Borstel Partner Site, Hamburg, Germany.