Affiliation: | (1) Department of Obstetrics and Gynaecology, Faculty of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666 Al-Ain, United Arab Emirates;(2) Southend Primary Care Trust & University of Cambridge, Harcourt House, Harcourt Avenue, Southend on Sea, SS2 6HE Essex, UK;(3) Serology Laboratory, Tawam Hospital, Al-Ain, United Arab Emirates;(4) Department of Family & Community Health, Faculty of Medicine, Sultan Qaboos University, Muscat, Oman;(5) Department of Obstetrics & Gynaecology, Al-Cornich Hospital, Abu Dhabi, United Arab Emirates |