1. Department of Internal Medicine, Cantonal Hospital of St. Gallen, St. Gallen, Switzerland
2. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital of St. Gallen, St. Gallen, Switzerland
3. Department of Rheumatology, Cantonal Hospital of St. Gallen, St. Gallen, Switzerland
4. Department of Internal Medicine, Regional Hospital of Grabs, St. Gallen, Switzerland
5. Zentrum für Labormedizin, St. Gallen, Switzerland
6. Children’s Hospital of Eastern Switzerland, Infectious Diseases and Hospital Epidemiology, St. Gallen, Switzerland
7. University of Basel, Basel, Switzerland
8. Department of Medicine, Swiss TPH, Basel, Switzerland