1. Primary Health Centre Khusrupur, Patna, Bihar, India
2. Department of Periodontia, Dr. R Ahmed Dental College and Hospital, Kolkata, West Bengal, India
3. Department of Dentistry, North Bengal Medical College and Hospital, Siliguri, West Bengal, India
4. Department of Periodontia, North Bengal Dental College and Hospital, Siliguri, West Bengal, India
5. Department of Oral Medicine and Radiology, Narsinbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India