1. Department of Pediatric Hematology and Oncology Imam Khomeini Hospital Complex Tehran University of Medical Sciences Tehran Iran
2. Thalassemia and Hemoglobinopathy Research Center Health Research Institute Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
3. Department of Pathology School of Medicine Shariati Hospital Tehran University of Medical Sciences Tehran Iran
4. Department of Otorhinolaryngology Imam Khomeini hospital complex Tehran University of Medical Sciences Tehran Iran
5. Department of Pediatrics Tehran University of Medical Science Tehran Iran