1. M.B.B.S., M.D. (Obs. & Gynae.), Assistant Professor, Department of Obstetrics and Gynaecology, Darbhanga Medical College and Hospital, Laheriasarai, Bihar.
2. M.B.B.S., M.D. (Obs. & Gynae.), Ph.D. (Obs. & Gynae.), Associate Professor, Department of Obstetrics and Gynaecology, Darbhanga Medical College and Hospital, Laheriasarai, Bihar.
3. M.B.B.S., M.D. (Obs. & Gynae.), Associate Professor, Department of Obstetrics and Gynaecology, Darbhanga Medical College and Hospital, Laheriasarai, Bihar.
4. Young Scientist (DST), Institute of Post-Graduate Medical Education and Research, A.J.C. Bose Road, Kolkata, West Bengal, India-700020.