1 Sri Venkateswara Dental College and Hospital, Chennai, India.
2 Department of Oral Pathology and Microbiology, Sri Venkateswara Dental College and Hospital, Chennai, India.
3 Tagore Dental College and Hospital, Chennai, India.
4 Bala Vidya Mandir School, Chennai, India.
5 Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
6 Department of Oral Pathology and Microbiology, Sri Venkateswara Dental College and Hospital, Chennai, India. Electronic address: thirumalraj666@gmail.com.