Muhammad Umair, Khan, M.S. , Tirimzi , S.S.A. , Maqbool , R. , Palwasha , A. and Yasir Ishaq 2023. A prospective Cohort Study of Chest Physiotherapy’s Effects on Patients with Cystic Fibrosis. Pakistan Journal of Chest Medicine. 29, 2 (Jun. 2023), 171–175.