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. J. Univ. Med. Dent. Coll. [Internet]. 2021Nov.24 [cited 2025Oct.6];12(4):244-7. Available from: http://www.jumdc.com/index.php/jumdc/article/view/579