Akram, Sumera. “Effect of Vitamin-D Supplementation in Children With Moderate-Severe Persistent Allergic Rhinitis”. International Journal of Pathology, translated byMuhammad Ahmed Khan et al., vol. 18, no. 3, Feb. 2021, pp. 92-98, https://www.jpathology.com.65-21-161-183.cpanel.site/index.php/OJS/article/view/584.