1. Department of Periodontics, Himachal Dental College, Sunder Nagar, Himachal Pradesh, India
2. Department of Periodontics, Gian Sagar Dental College and Hospital, Patiala, Punjab, India
3. Department of Oral and Maxillofacial Surgery, Himachal Dental College, Sunder Nagar, Himachal Pradesh, India