1. NTEP Consultant, World Health Organization, India
2. Department of Epidemiology, All India Institute of Hygiene and Public Health, Kolkata, West Bengal, India
3. Department of Preventive and Social Medicine, All India Institute of Hygiene and Public Health, Kolkata, West Bengal, India
4. Department of Community Medicine, ESI MC, Kolkata, West Bengal, India
5. Department of Community Medicine, AIIMS, Kalyani, West Bengal, India