1. Department of Obstetrics and Gynaecology, Hamdard Institute of Medical Sciences and Research, New Delhi 110062, India
2. Reader’s Flat No. 4, Lady Hardinge Medical College Campus, New Delhi 110001, India
3. Department of Obstetrics and Gynaecology, Lady Hardinge Medical College, New Delhi 110001, India
4. Department of Preventive and Social Medicine, Lady Hardinge Medical College, New Delhi 110001, India