1. Institute of Hematology, Rabin Medical Center, Petah-Tikva, Israel;
2. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel;
3. Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA;
4. Weill Cornell Medical College, New York, New York, USA;
5. Medical Oncology Service, Department of Medicine, University of Nebraska, Omaha, Nebraska, USA