NUR MASDALIFAH. Differences in Knowledge Before and After Instructions on Washing Hands During the Covid-19 Pandemic in the Social Services of the Elderly Management Year 2020. International Journal of Public Health Excellence (IJPHE), [S. l.], v. 1, n. 1, p. 83–87, 2022. DOI: 10.55299/ijphe.v1i1.200. Disponível em: https://ejournal.ipinternasional.com/index.php/ijphe/article/view/200. Acesso em: 3 jul. 2024.