1. M.S. (Gen. Surg.), Associate Professor, Department of surgery, Anugrah Narayan Magadh Medical College and Hospital, Gaya, Bihar.
2. M.S. (Gen. Surg.), Assistant Professor, Department of surgery, Anugrah Narayan Magadh Medical College and Hospital, Gaya, Bihar
3. Young Scientist (DST), Institute of Post-Graduate Medical Education and Research, A.J.C. Bose Road, Kolkata-700020, West Bengal, India