1 Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences, Mangalore 575001, India; Manipal Academy of Higher Education, A Constituent of MAHE, Light House Hill Road, India. Electronic address: sameep.shetty@manipal.edu.
2 Klinik für Hals-, Nasen- und Ohrenheilkunde, Klinikum rechts der Isar der TU München, Ismaningerstraße 22, 81675 München, Germany. Electronic address: barbara.wollenberg@tum.de.
3 Coorg Institute of Dental Sciences, Virajpet 571218, India.
4 Head and Neck Surgical Oncologist, Health Care Global Enterprises Ltd, Bangalore, India.
5 Head and Neck Surgical Oncologist, Health Care Global Enterprises Ltd, Bangalore, India. Electronic address: drvishal.rao@hcgel.com.
6 Dept. of Head and Neck Oncology, Health Care Global Enterprises Ltd, Bangalore, India.