Ilana Levy1, Aaron Polliack2, Tamar Tadmor3,4. 1. Department of Internal Medicine B, Bnai Zion Medical Center, Haifa, Israel. 2. Department of Hematology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. 3. Hematology Unit, Bnai Zion Medical Center, Haifa, Israel, tamar.tadmor@b-zion.org.il. 4. The Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel, tamar.tadmor@b-zion.org.il.