Radhitya AF, Zairus D. CHRONIC OBSTRUCTIVE PULMONARY DISEASE EXACERBATION. J. Agromedicine Unila [Internet]. 2014Aug.1 [cited 2025Oct.13];1(1):49-54. Available from: https://juke.kedokteran.unila.ac.id/index.php/agro/article/view/1335