GULTOM, D. M.; HASIBUAN, E. E.; SARI, E.; BATUBARA, F. L. E. The Relationship between Knowledge and Attitude of the Elderly in Handwashing as an Effort to Prevent Covid-19 . International Journal of Public Health Excellence (IJPHE), [S. l.], v. 1, n. 1, p. 56–59, 2022. DOI: 10.55299/ijphe.v1i1.13. Disponível em: https://ejournal.ipinternasional.com/index.php/ijphe/article/view/13. Acesso em: 3 jul. 2024.