1. Endocrine Department, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar;
2. Department of Obstetrics and Gynaecology, Women’s Hospital, Hamad Medical Corporation, Doha, Qatar;
3. Department of Obstetrics and Gynaecology, Faculty of Medicine, Minia University, Minia, Egypt;
4. Department of Obstetrics and Gynaecology, Sidra Medical, Doha, Qatar