Krishnan E, Ponnusamy V, Sekar SP. Trial of vitamin D supplementation to prevent asthma exacerbation in children. Int J Res Med Sci [Internet]. 2017 May 27 [cited 2026 Mar. 26];5(6):2734-40. Available from: https://www.msjonline.org/index.php/ijrms/article/view/3198