anggraini, melisa putri. “Overview of Early Warning Alert Respone System (EWARS) Performance at Trenggalek District in 2016”. Jurnal Berkala Epidemiologi 5, no. 3 (December 22, 2017): 286–297. Accessed December 25, 2024. https://e-journal.unair.ac.id/JBE/article/view/5321.