Roy, R., A. Gupta, and M. Chaudhry. “Prevalence of Vitamin A Deficiency in School Children Aged 6-16 Years in Taoru Tehsil of South Haryana”. International Journal of Scientific Reports, vol. 2, no. 10, Sept. 2016, pp. 253-7, doi:10.18203/issn.2454-2156.IntJSciRep20163396.