Rajiv Kumar Saxena1, Gurpreet Singh Sandhu2, K M Babu3. 1. Department of Obstetrics & Gynaecology, Vydehi Institute of Medical Sciences and Research Centre, 82 EPIP Area, Whitefield, Bangalore, India. 2. Department of Obstetrics & Gynaecology, Command Hospital Air Force, Old Airport Road, Bangalore, India. 3. Department of Obstetrics & Gynaecology, 7 Air Force Hospital, Nathu Singh Road, Kanpur, India.