Kumar, S., A. N. Aslami, T. Rai, and B. Alwa. “Effect of Living Environment on Ear, Nose and Throat Diseases: A Cross Sectional Survey in Rural Areas of Rohtas District in Bihar”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 4, no. 3, Apr. 2018, pp. 625-9, doi:10.18203/issn.2454-5929.ijohns20181442.