1. Department of Hematology; Hospital Clinic; Barcelona; Spain
2. Oncology Institute of Southern Switzerland; Bellinzona; Switzerland
3. Istituto cantonale di microbiologia; Bellinzona; Switzerland
4. Cancer Research UK Centre; Southampton General Hospital; Southampton; UK
5. Department of Medicine; Ospedale Regionale Locarno; Switzerland
6. Department of Medicine; Ospedale Civico Lugano; Switzerland