1. Department of Community Medicine, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, India
2. Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh, India
3. Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
4. Department of Paediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
5. Department of Community Medicine, ESIC Medical College and Hospital, Sanath Nagar, Hyderabad, Telangana, India