Iftikhar Ali Kakar, Abdul Baqi, Nasir Azim, Waqas Ahmad, Zeeshan Shaukat, Khalid Shahab. “Frequency of Gastroesophageal Reflux Disease in Chronic Obstructive Pulmonary Disease Patients”. Pakistan Journal of Medical & Health Sciences 16, no. 12 (February 3, 2023): 397. Accessed November 21, 2024. https://mail.pjmhsonline.com/index.php/pjmhs/article/view/3707.