Neeraj Aggarwal1, Mainak Dutta2, Ramanuj Sinha1. 1. Department of Otorhinolaryngology and Head-Neck Surgery, Medical College and Hospital, Kolkata, 88, College Street, Kolkata 700073, West Bengal, India. 2. Department of Otorhinolaryngology and Head-Neck Surgery, Medical College and Hospital, Kolkata, 88, College Street, Kolkata 700073, West Bengal, India. Electronic address: duttamainak@yahoo.com.