., Harsini, Ikhlas Muhammad Jenie, and Arlina Dewi. “Correlation Copetin Biomarker With Length of Stay Patient Community Acquired Pneumonia”. RA Journal Of Applied Research 5, no. 10 (October 22, 2019): 2554–2558. Accessed April 25, 2024. http://www.rajournals.in/index.php/rajar/article/view/544.