Istanto, Widya, and Erik Maruli Tua. “Manajemen Perioperatif Pada Pasien COVID-19”. Medica Hospitalia : Journal of Clinical Medicine 7, no. 1A (August 28, 2020): 214–225. Accessed May 3, 2024. http://medicahospitalia.rskariadi.co.id/medicahospitalia/index.php/mh/article/view/455.