1. Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna, Austria
2. Division of Transplant Surgery, Department of Surgery, Medical University Vienna, Austria
3. Department of Emergency Medicine, Medical University Vienna, Austria
4. Center of Virology, Medical University Vienna, Austria
5. Department of Pathology, Medical University Vienna, Austria
6. Division of Medical and Chemical Laboratory Diagnostics, Department of Laboratory Medicine, Medical University Vienna, Austria