“Does Vitamin D3 Supplementation Improve Ventilatory Function of Vitamin D Deficient COPD Patients? - A Randomized Controlled Trial : Vitamin D3 Supplementation and COPD”. 2025. Journal of the Medical College for Women & Hospital 21 (1): 13-22. https://doi.org/10.3329/jmcwh.v21i1.79870.