RIDA KHAN; HAFIZ MUHAMAMD WASEEM; SADIA NAZIR; SHUMAILA DOGGAR; MOHSIN ALI CHEEMA; KHALID PARVEZ LONE. Comparison of spirometry data and symptoms between male and female smokers with chronic obstructive pulmonary disease. Journal of University Medical & Dental College, v. 12, n. 4, p. 244-247, 24 Nov. 2021.