1. Department of Paediatrics and Child Health , Faculty of Medicine, Al-Neelain University , Khartoum , Sudan
2. Paediatric Endocrinology Unit, Gaafar Ibn Auf Children’s Hospital , Khartoum , Sudan
3. Sudan Childhood Diabetes Centre , Khartoum , Sudan
4. Al-Neelain University, Faculty of Medicine , Khartoum , Sudan
5. Department of Basic Medical Sciences , Unaizah College of Medicine and Medical Sciences, Qassim University , Unaizah , Kingdom of Saudi Arabia
6. Department of Paediatrics and Child Health , Faculty of Medicine, University of Khartoum , Khartoum , Sudan