1. Department of Pediatrics, Section of Medical Genetics, Children's Specialist Hospital King Fahad Medical City Riyadh Saudi Arabia
2. Department of Medical Genetics King Faisal Specialist Hospital Riyadh Saudi Arabia
3. Department of Medicine Alfaisal University Riyadh Saudi Arabia
4. Department of Obstetrics and Gynaecology King Faisal Specialist Hospital Riyadh Saudi Arabia