V, S., D. Jayachander, V. Kamath, M. Rao, M. Tonse, and M. Baliga. “Evaluation of the Prevalence and Severity of Xerophthalmia in Head and Neck Cancers Patients Undergoing Curative Radiotherapy”. Asian Journal of Ophthalmology, Vol. 14, no. 4, Jan. 2016, doi:10.35119/asjoo.v14i4.149.