1. Department of Pediatrics, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
2. King Fahd Hospital of the University, Al-Khobar, Saudi Arabia
3. College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
4. Department of Emergency, King Hamad University Hospital, Al Sayh, Bahrain