1. Medical Officer (SUPY), Swasthya Bhawan, Kolkata, West Bengal.
2. Senior Resident, R. G. Kar Medical College And Hospital. Kolkata.
3. Professor And Head Department Of Otorhinolaryngology, R. G. Kar Medical College & Hospital, Kolkata
4. Young Scientist (DST) Institute Of Post-graduate Medical Education And Research, A.j.c. Bose Road, Kolkata-700020, West Bengal, India