Ashraf, S., Ashraf, A., Ali, U., Hadi, N. ul, Anwar, R., Zaman, M., & Hafizullah, M. (2016). FREQUENCY OF UNDIAGNOSED ISCHEMIC HEART DISEASE IN PATIENTS ADMITTED WITH ACUTE EXACERBATION OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE. Pakistan Heart Journal, 49(3). https://doi.org/10.47144/phj.v49i3.1115