Affiliation: | 1. Pediatric Department, Pediatric Cardiology Unit, Cairo University Children Hospital, Cairo, Egypt 5. Kinder Clinic, 31 El Marwa St.,of Shooting Club St. Mohandeseen, Giza, 1156, Egypt 2. Pediatric Department, Pediatric Hematology Unit, Cairo University Children Hospital, Cairo, Egypt 3. Clinical Pathology Department, Cairo University Hospitals, Cairo, Egypt 4. NIHR Cardiovascular Biomedical Research Unit, Royal Brompton Hospital & Imperial College, London, UK
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