1. Department of Hematology/Oncology, Alhada Armed Forces Hospital, Taif, Saudi Arabia
2. Department of Pediatric, Armed Forces Hospital, Southern Region, Saudi Arabia
3. Department of Pediatric, Alhada Armed Forces Hospital, Taif, Saudi Arabia
4. Department of Laboratory, Alhada Armed Forces Hospital, Taif, Saudi Arabia
5. Aga Khan University Hospital (Alumni), Karachi, Pakistan
6. National Cancer Institute (NCI), Cairo University, Cairo, Egypt