Francis, Annu, and R. Balasasirekha. “Effect of Sunlight - UV Rays on the Vitamin D Status of Girls (18 to 22 Years)”. The Indian Journal of Nutrition and Dietetics 55, no. 4 (October 9, 2018): 463–477. Accessed November 8, 2024. https://informaticsjournals.co.in/index.php/ijnd/article/view/21659.