Lubis EF. CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) MANAGEMENT IN OLD MALE WITH HISTORY AS ACTIVE SMOKERS. J. Agromedicine Unila [Internet]. 2014Nov.1 [cited 2025Oct.16];1(2):92-9. Available from: https://juke.kedokteran.unila.ac.id/index.php/agro/article/view/1301