Rumahorbo, Hotma, Priyanto Priyanto, and Atin Karjatin. 2021. “A Cross-Sectional Online Survey on Public Attitudes towards Wearing Face Masks and Washing Hands to Prevent the Spread of COVID-19 in Indonesia”. Open Access Macedonian Journal of Medical Sciences 9 (E):1238-43. https://doi.org/10.3889/oamjms.2021.6907.