1. Division of Infectious Diseases and Hospital Epidemiology; University and University Hospital of Basel; Basel Switzerland
2. Clinic for Transplantation Immunology and Nephrology; University Hospital of Basel; Basel Switzerland
3. Division of Hematology; Oncology Institute of Southern Switzerland; Bellinzona Switzerland
4. Division of Hematology; University Hospital of Basel; Basel Switzerland
5. Division of Hematology; University and University Hospital of Zurich; Zurich Switzerland
6. Clinic of Internal Medicine and Infectious Diseases; Clinica Luganese; Lugano Switzerland
7. Department of Infectious Diseases, Inselspital; Bern University Hospital; University of Bern; Bern Switzerland
8. Division of Infectious Diseases and Hospital Epidemiology; University Children's Hospital Zurich; Zurich Switzerland
9. Division of Hematology; University Hospital of Geneva; Geneva Switzerland
10. Division of Infectious Diseases and Hospital Epidemiology; University Hospital of Zurich; Zurich Switzerland
11. Transplant Infectious Diseases Unit; University Hospitals of Geneva; Geneva Switzerland