1 Department of Oral Pathology and Microbiology, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.
2 Department of Oral and Maxillofacial Surgery, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.
3 Department of Oral Pathology and Microbiology, Fifth floor, Centre for Dental Education and Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. Electronic address: deepika1904@gmail.com.