SIKANDAR ALI KHAN; HINA HAKIM; FARZANA SALMAN; SHAMAILA WADUD; SARA YAR KHAN; MOMINA HAQ. Effects of Vitamin D on Respiratory Function and Immune Status for Patients with Chronic Obstructive Pulmonary Disease (COPD): A Systematic Review. Journal of Gandhara Medical and Dental Science, [S. l.], v. 13, n. 3, p. 132–142, 2026. DOI: 10.37762/jgmds.13-3.890. Disponível em: http://jgmds.org.pk/index.php/JGMDS/article/view/890. Acesso em: 24 sep. 2026.