1. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St Gallen , St. Gallen , Switzerland
2. Department of Infectious Diseases and Hospital Epidemiology, Children’s Hospital of Eastern Switzerland , St. Gallen , Switzerland
3. Division of Infectious Diseases, Cantonal Hospital of Grisons , Chur , Switzerland
4. Ambulatory Services, Psychiatry Services of the Canton of St. Gallen (South) , St. Gallen , Switzerland
5. Ambulatory Services, Psychiatry Services of the Canton of St. Gallen (North) , St. Gallen , Switzerland
6. Department of Psychiatry, Clienia Littenheid , Littenheid , Switzerland
7. Center for Neurological Rehabilitation , Zihlschlacht , Switzerland
8. Rheintal Werdenberg Sarganserland Hospital Group , Grabs , Switzerland
9. Fuerstenland Toggenburg Hospital Group , Wil , Switzerland
10. Hirslanden Clinic , Zurich , Switzerland
11. Division of Infectious Diseases and Hospital Epidemiology, Thurgau Hospital Group , Muensterlingen , Switzerland
12. Department of Research and Development, Swiss National Centre for Infection Prevention (Swissnoso) , Berne , Switzerland
13. Geriatric Clinic St. Gallen , St. Gallen , Switzerland
14. Sinai Health System , Toronto , Canada
15. Labormedizinisches Zentrum Dr Risch Ostschweiz AG , Buchs , Switzerland
16. Private Universität im Fürstentum Liechtenstein , Triesen , Liechtenstein
17. Center of Laboratory Medicine, University Institute of Clinical Chemistry, University of Bern, Inselspital , Bern , Switzerland
18. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital Baden , Baden , Switzerland