1. Pediatric Hematology-Oncology Department and Pediatric Infectious Research Center, Shahid Beheshti Medical University, Mofid Childrens' Hospital, Tehran, Iran.
2. Iranian Blood and Transfusion Organization, Tehran, Iran.
3. Student's Scientific Research Center (SSRC), Tehran University of Medical Sciences (TUMS), Tehran, Iran.
4. Pediatric Infectious Research Center, Shahid Beheshti Medical University, Tehran, Iran.