1. Transplant Infectious Diseases Unit; University Hospitals of Geneva; Geneva Switzerland
2. Division of Pediatric Infectious Diseases; University Hospital of St Luc; Brussels Belgium
3. Department of Infectious Diseases, Inselspital; Bern University Hospital and University of Bern; Bern Switzerland
4. Departments of Internal Medicine and Infectious Disease; Clinica Luganese; Lugano Switzerland
5. Division of Infectious Diseases and Hospital Epidemiology; University Children's Hospital Zürich; Zürich Switzerland
6. Division of Infectious Diseases and Hospital Epidemiology; Cantonal Hospital St Gallen; St Gallen Switzerland
7. Division of Infectious Diseases and Hospital Epidemiology; University and University Hospital of Basel; Basel Switzerland
8. Service of Infectious Diseases and Transplantation Center; University Hospital of Lausanne; Lausanne Switzerland
9. Division of Infectious Diseases and Hospital Epidemiology; University Hospital of Zurich; Zurich Switzerland