1. Department of Microbiology, Sri Manakula Vinayagar Medical College and Hospital, Puducherry, India
2. Department of Community Medicine, Mahatma Gandhi Medical College and Research Institute, SBV (Deemed to be University), Puducherry, India
3. Department of Community Medicine, All India Institute of Medical Sciences, Mangalagiri, India
4. Department of Dentistry, Sri Manakula Vinayagar Medical College and Hospital, Puducherry, India,