Physiological Evaluation of Vitamin D Status in Relation to Pulmonary Function Parameters (FEV1/FVC) in Asthmatic Patients in Wasit Province, Iraq. J.P.A.S [Internet]. 2026 Oct. 5 [cited 2026 Oct. 8];26(4). Available from: https://atbuscienceforum.com.ng/index.php/jpas/article/view/599