1. Children's Hospitals Pediatric Hematology Oncology Ain Shams University Cairo Egypt
2. Child Health in Complementary Medicine National Research Center cairo Egypt
3. Pediatric Hematology Pediatric Hematology Bani‐Suif University Bani‐Suif Egypt
4. Haemophilia treatment centre Haemophilia treatment Centre Rawalpindi Rawalpindi Pakistan
5. Frontier Medical college Frontier Medical College Abbotabad Abbotabad Pakistan
6. Hereditary Blood Disorders Center King Abdullah Medical City AlMadinah Saudi Arabia
7. Hematology unit Shabrawishi Hospital Blood Bank Giza Egypt