Fatmasari, F. . Syahrul, Z. . Darajat, and E. F. . Kusuma. “Analysis of COVID-19 Surveillance System at Makassar City Health Office 2020”. Indonesian Journal of Tropical and Infectious Disease, vol. 10, no. 2, Aug. 2022, pp. 83-92, doi:10.20473/ijtid.v10i2.29378.