Amep_a_331296 1513..1519

1Department of Pediatrics, Faculty of Medicine, University of Bahri, Khartoum, Sudan; 2Department of Pediatrics, College of Medicine, University of Bisha, Bisha, Saudi Arabia; 3Department of Medical Education, College of Medicine, University of Bisha, Bisha, Saudi Arabia; 4Department of Community Medicine, School of Medicine, Ahfad University for Women, Khartoum, Sudan; 5Department of Pediatrics, College of Medicine, Shaqra University, Shaqra, Saudi Arabia; 6Department of Community Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan; 7Department of Internal Medicine and Medical Education Unit, Al-Rayan Medical Colleges, Medina Munawara, Saudi Arabia; 8Department of Pathology, Faculty of Medicine, University of Bahri, Khartoum, Sudan; 9Department of Pathology, Maternity and Children Hospital, Medina Munawara, Saudi Arabia; 10Department of Pediatrics, College of Medicine, Arabian Gulf University, Manama, Bahrain