1. Department of Anesthesiology, Cantonal Hospital St. Gallen, Switzerland
2. Infectious Diseases and Hospital Epidemiology, Switzerland
3. Transplantation and Clinical Virology, Department Biomedicine, University of Basel, Switzerland
4. Clinic of Pulmonary Medicine and Respiratory Cell Research, Switzerland
5. Hematology, University of Basel, Switzerland
6. Infection Biology, Department Biomedicine, University and University Hospital of Basel, Switzerland