1. Department of Obstetrics and Gynecology, Sultan Qaboos University Hospital, Muscat, Oman.
2. Department of Obstetrics and Gynecology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman.
3. Department of Pathology, Sultan Qaboos University Hospital, Muscat, Oman.
4. Department of Pathology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman.