1. Department of Oral Medicine and Radiology, Drs Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Gannavaram Mandal, Krishna District, Andhra Pradesh 521286, India
2. Department of Otorhinolaryngology, Dr. Pinnamaneni Siddhartha Institute of Medical Sciences and Research Foundation, Gannavaram Mandal, Krishna District, Andhra Pradesh 521286, India
3. Department of Oral Medicine and Radiology, Chettinad Dental College & Research Institute, Rajiv Gandhi Salai, Kelambakkam, Kancheepuram District 603103, India