“Prospective Study on Determination of Optimal Drainage Volume in Massive Pleural Effusion Based on Pleural Effusion Index”. e-CliniC 10, no. 2 (September 5, 2022): 372–378. Accessed October 31, 2026. https://ejournal.unsrat.ac.id/v3/index.php/eclinic/article/view/41495.