A Prospective Comparative Study of Clinicoradiological Characteristics, Pulmonary Function, and Bronchodilator Response in Smokers and Nonsmokers with Chronic Obstructive Pulmonary Disease - K. Jisna; V. Jereen; A. Arthi; George Roshan Prasanth Durairaj; Dhinesh Kumar (Annals of African Medicine, 2026)