1. Talwar Research Foundation, All India Institute of Medical Sciences, New Delhi, India,
2. Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi, India,
3. Department of Obstetrics and Gynaecology, Sir Ganga Ram Hospital, New Delhi, India,
4. Department of Reproductive Biology, Maternal and Child Health, New Delhi, India,
5. Department of Basic Medical Sciences, Indian Council of Medical Research, New Delhi, India,
6. Department of Obstetrics and Gynecology, Fortis La Femme, Gurgaon, Haryana, India,