Alina Muneeb, Sarmad Abdul Rehman Khan, Mamoona Shoukat. Association Between Vitamin D Deficiency and Severity of Respiratory Infections in Adults. Pakistan Journal of Medical & Health Sciences [Internet]. 2023 Dec. 30 [cited 2025 Dec. 20];17(12):733. Available from: https://pjmhsonline.com/index.php/pjmhs/article/view/6928