1 Department of Otorhinolaryngology and Head-Neck Surgery, KMCH Institute of Health Sciences and Research, Coimbatore 641014, India. Electronic address: pirabusakthivel@gmail.com.
2 Department of Otorhinolaryngology and Head-Neck Surgery, KMCH Institute of Health Sciences and Research, Coimbatore 641014, India.
3 Department of Surgical Oncology, KMCH Institute of Health Sciences and Research, Coimbatore 641014, India.