1. Department of Pediatric Oncology, Children’s Cancer Hospital Egypt (CCHE), Cairo, Egypt
2. Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
3. Department of Clinical Pathology, Children’s Cancer Hospital Egypt (CCHE), Cairo, Egypt
4. Department of Clinical Pathology, National Cancer Institute, Cairo University, Cairo, Egypt
5. Department of Research, Children’s Cancer Hospital (CCHE), Cairo, Egypt
6. Pediatric Stem Cell Transplantation Unit, Dana Farber Cancer Institute, Boston, MA, USA