Or Kalchiem-Dekel1, Uri Greenbaum2. 1. Department of Medicine B, Soroka University Medical Center, Beer-Sheva, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel. Electronic address: kalchiem@bgu.ac.il. 2. Department of Hematology, Soroka University Medical Center, Beer-Sheva, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.