1. Maternal and Child Health Department, College of Nursing, Sultan Qaboos University, Muscat, Oman
2. Griffith University, Nathan Campus, Nathan, Queensland, Australia
3. Family Medicine and Public Health Department, Epidemiology and Biostatistics Section, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
4. Obstetric Gynaecology OPD Department, Sultan Qaboos University Hospital, Muscat, Oman
5. Department of Obstetrics & Gynecology, College of Medicine, Sultan Qaboos University Hospital, Muscat, Oman