Olivia MP AY. Suatu Analisis Faktor-Faktor Transmisi Lokal Covid-19 Di Praktek Dokter Gigi . pannmed [Internet]. 2021 May 10 [cited 2025 Sep. 21];16(1):143-9. Available from: https://ojs.poltekkes-medan.ac.id/pannmed/article/view/1017