Department of Obstetrics and Gynecology, UKM Medical Centre, Kuala Lumpur, Malaysia. Department of Obstetrics and Gynecology, Faculty of Medicine, Syiah Kuala University, Banda Aceh, Indonesia. Department of Radiology, UKM Medical Centre, Kuala Lumpur, Malaysia. Department of Community Health, Faculty of Medicine, UKM Medical Centre, Kuala Lumpur, Malaysia. UKM Medical Molecular Biology Institute (UMBI), Kuala Lumpur, Malaysia.