Ashraf, Saadia, Amber Ashraf, Umair Ali, Noor ul Hadi, Rukhsana Anwar, Mukhtiar Zaman, and Muhammad Hafizullah. “FREQUENCY OF UNDIAGNOSED ISCHEMIC HEART DISEASE IN PATIENTS ADMITTED WITH ACUTE EXACERBATION OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE”. Pakistan Heart Journal 49, no. 3 (November 15, 2016). Accessed November 24, 2024. https://pakheartjournal1.pcs.org.pk/index.php/pk/article/view/1115.