1. Division of Infectious Diseases University Hospital of Geneva Geneva Switzerland
2. Division of Hematology Bone Marrow Transplant Unit University Hospital of Geneva and faculty of MedicineUniversity of Geneva Geneva Switzerland
3. Division of Infectious Diseases University Hospital of Lausanne Lausanne Switzerland
4. Division of Infectious Diseases Cantonal Hospital of Fribourg Fribourg Switzerland
5. Division of Infectious Diseases Cantonal Hospital of Sion and Institut Central des Hôpitaux (ICH) Sion Switzerland