1. Junior Resident, Department of Community Medicine, Maulana Azad Medical College, New Delhi-110002
2. Director Professor, Department of Community Medicine, Maulana Azad Medical College, New Delhi 110002.
3. Assistant Professor, School of Health Sciences, Indira Gandhi National Open University, Maidan garhi, New Delhi 110068.
4. Professor of Excellence and Director Professor, Department of Community Medicine, Maulana Azad Medical College, New Delhi 110002.
5. Professor, Department of Community Medicine, Maulana Azad Medical College, New Delhi 110002.
6. Senior Resident, Department of Community Medicine, Maulana Azad Medical College, New Delhi 110002.