1. World Health Organization, World Health Organization, Nutrition for Health and Development Guideline. [Internet]. 2011. Accessed May 17, 2021. Available from: http://whqlibdoc.who.int/publications/2011/9789241501767_eng.pdf
2. Imdad A, Mayo-Wilson E, Herzer K, Bhutta ZA. Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age. Cochrane Database Syst Rev. 2017;3:CD008524.
3. Reddy GB, Pullakhandam R, Ghosh S, et al. Vitamin A deficiency among children younger than 5 y in India: an analysis of national data sets to reflect on the need for vitamin A supplementation. Am J Clin Nutr. 2021;113:939–47.
4. Review Manager (RevMan) [Computer program]. Version 5.3. The Nordic Cochrane Centre, The Cochrane Collaboration, 2014.
5. Sample Registration System Bulletin 2018 [Internet]. Accessed May 17, 2001. Available from: https://censusindia.gov.in/vital_statistics/SRS_Bulletins/SRS%20Bulletin_2018.pdf