The Relationship Between Bacterial Pattern with Degree of Airflow Limitation FEV1 in Acute Exacerbation of COPD at Adam Malik General Hospital and Pirngadi Hospital. J Respirol Indones [Internet]. 2019 Jul. 1 [cited 2025 Aug. 20];39(3):204-9. Available from: https://jurnalrespirologi.org/index.php/jri/article/view/66