1. M.B.B.S, M.S. (Gen. Surg.), Senior Resident, Department of General Surgery, Govt. Medical College and Hospital, Bettiah, W. Champaran, Bihar.
2. M.B.B.S, M.S. (Gen. Surg.), Assistant Professor, Department of General Surgery, Govt. Medical College and Hospital, Bettiah, W. Champaran, Bihar.
3. M.B.B.S, M.S. (Gen. Surg.), Associate Professor, Department of General Surgery, Govt. Medical College and Hospital, Bettiah, W. Champaran, Bihar.
4. Young Scientist (DST) Institute of Post-Graduate Medical Education and Research, A.J.C. Bose Road, Kolkata-700020, West Bengal, India