1. Department of Community Medicine, ESIPGIMSR and ESIC MC, Joka, Kolkata, West Bengal, India
2. Department of Community Medicine, JIMSH, Budge Budge, Kolkata, West Bengal, India
3. Department of Preventive and Social Medicine, AIIH and PH, Kolkata, West Bengal, India
4. Department of Community Medicine, KPC MCH, Kolkata, West Bengal, India
5. NTEP Consultant, World Health Organization, India