1. Senior Resident, R. G. Kar Medical College And Hospital. Kolkata.
2. Medical Ofcer (SUPY), Swasthya Bhawan, Gn-29 Sector-v, Salt Lake, Kolkata, West Bengal.
3. DPH,MD (medicine), Rmo -ct, Nil Ratan Sircar Medical College And Hospital.
4. Young Scientist (dst) Institute Of Post-graduate Medical Education And Research, A.j.c. Bose Road, Kolkata-700020, West Bengal, India.