1. Faculty of Medicine University of Gezira Wad Madani Sudan
2. Pediatrics Department College of Medicine Shaqra University Shaqra Kingdom of Saudi Arabia
3. Department of Pediatrics Unaizah College of Medicine and Medical Sciences Qassim University Unaizah Kingdom of Saudi Arabia
4. Department of Family and Community Medicine Unaizah College of Medicine and Medical Sciences Qassim University Unaizah Kingdom of Saudi Arabia
5. Faculty of Medicine University of Khartoum Khartoum Sudan
6. Department of Obstetrics and Gynecology Unaizah College of Medicine and Medical Sciences Qassim University Unaizah Kingdom of Saudi Arabia