1.
Naeem OM, Mahmud T. Frequency and Severity of Chronic Obstructive Pulmonary Disease in Cigarette Smokers Attending Psychiatry Out Patients Department. Pak J Chest Med [Internet]. 2020Oct.2 [cited 2026Apr.20];26(2):74-7. Available from: http://www.pjcm.net/index.php/pjcm/article/view/661