Effects of Mangosteen pericarp Extract to Clinical Improvements, The Plasma Level of IL-6 and Malondialdehyde in Acute Exacerbation of COPD Patients. J Respirol Indones [Internet]. 2018 Sep. 17 [cited 2025 Jul. 12];38(3):164-72. Available from: http://www.jurnalrespirologi.org/index.php/jri/article/view/6