Rahman, N. and Ullah, U. . (2026) “Preserved Ratio Impaired Spirometry (PRISm) in Mardan: A Retrospective Prevalence Study of Spirometric Patterns and Associated Comorbidities”, Pakistan Journal of Chest Medicine, 32(1), pp. 11–17. Available at: https://pjcm.net/index.php/pjcm/article/view/1106 (Accessed: 11May2026).