Dr. Ronit El Hasid is the Head of Pediatric Oncohematology and Oncology at Dana Dwek Children’s Hospital (Sourasky). She specializes in bone marrow and umbilical blood transplantation and has conducted over 300 transplantations and published 50 papers and 40 reports. She is a member of American Association for Hematology and Israeli Society for Pediatric Hematooncology, and has previously practiced in the City of Hope Hospital (Los-Angeles) and other medical centers in Israel.