Rahman, Md Mostafizur, and Md Mahmudur Rahman Siddiqui. “Global Initiative for Chronic Obstructive Lung Disease (GOLD)”. Anwer Khan Modern Medical College Journal 7, no. 1 (February 16, 2017): 4. Accessed July 17, 2024. https://banglajol.info/index.php/AKMMCJ/article/view/31596.