A., K., Meenuga, N., Jyothi R., G.V. and Chaitanya, V.K. 2019. Epidemiology and demographics of head and neck cancers: a hospital based retrospective study in Andhra Pradesh. Tropical Journal of Ophthalmology and Otolaryngology. 4, 7 (Dec. 2019), 446-451. DOI:https://doi.org/10.17511/jooo.2019.i07.08.