1. Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
2. Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
3. Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria
4. Center for Virology, Medical University of Vienna, Vienna, Austria
5. Institute for Medical Microbiology and Hygiene, Austrian Agency for Health and Food Safety, Vienna, Austria
6. Division of Virology, Department of Laboratory Medicine, Medical University Vienna, Vienna, Austria
7. Paracelsus Medical University of Salzburg, Salzburg, Austria
8. Wiener Gesundheitsverbund, Vienna, Austria