1. Division of Hematology, Chaim Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel;
2. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel;
3. Biostatistical Unit, Gertner Institute of Epidemiology and Health Policy Research, Ramat Gan, Israel;
4. Hematology Laboratory, Cancer Research Center, Sheba Medical Center, Ramat Gan, Israel