1. Primary Health Care Corporation, Doha, Qatar
2. Department of Obstetrics and Gynaecology, College of Medicine, University of Bisha, Bisha, Saudi Arabia
3. Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Gezira, Sudan
4. Department of Chemistry, Faculty of Science, Bakht Er-Ruda University, Sudan
5. Department of Paediatrics, College of Medicine, University of Bisha, Bisha, Saudi Arabia