Madubun SEP, Angkejaya OW, Que BJ, Lima F de, Titaley CR. EtCO2 Levels in Medical Students Wearing N95 Masks. JR [Internet]. 2023 Sep. 30 [cited 2024 Nov. 28];9(3):169-75. Available from: https://e-journal.unair.ac.id/JR/article/view/43737