ullah R, Salam S, Ghaffar T, Muhammad R, Khan I. FREQUENCY OF UNDIAGNOSED CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN PATIENTS WITH CORONARY ARTERY DISEASE. J Ayub Med Coll Abbottabad [Internet]. 2017 Apr. 8 [cited 2025 May 3];29(2):285-8. Available from: https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/1731