1. Department of Medical Oncology; University Hospital Zurich; Zurich Switzerland
2. Department of Biostatistics; Epidemiology, Biostatistics and Prevention Institute, University of Zurich; Zurich Switzerland
3. Department of Hematology; University Hospital Zurich; Zurich Switzerland
4. Medical Oncology and Hematology; Triemli City Hospital; Zurich Switzerland
5. Center of Oncology, Hematology and Transfusion Medicine, Cantonal Hospital Aarau; Aargau Switzerland