Affiliation: | 1. Department of Prosthodontics, Faculty of Dental Sciences, Chhatrapati Shahuji Maharaj Medical University (UP), , Lucknow, Uttar Pradesh, India;2. Department of Pulmonary Medicine, Faculty of Medical Sciences, Chhatrapati Shahuji Maharaj Medical University (UP), , Lucknow, Uttar Pradesh, India;3. Department of Otorhinolaryngology, Faculty of Medical Sciences, Chhatrapati Shahuji Maharaj Medical University (UP), , Lucknow, Uttar Pradesh, India |