1. Department of Oral and Maxillofacial Surgery, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India.
2. Department of Oral and Maxillofacial Surgery, Dental College, Regional Institute of Medical Sciences, Imphal, Manipur, India.
3. Department of Conservative Dentistry and Endodontics, Awadh Dental College and Hospital, Jamshedpur, Jharkhand, India.