1. Department of Obstetrics & Gynecology, Hamdard Institute of Medical Sciences & Research, New Delhi 110062, India
2. The Department of Mathematics & Statistics, The University of the West Indies, St. Augustine Campus, Trinidad and Tobago
3. Medical Research Centre and Cardiology, CCS Department, Hamad Medical Corporation (HMC), Doha, Qatar
4. Department of Obstetrics & Gynecology, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi 110029, India