Buccal tissue changes associated with covid-19: a literature review. International Seven Journal of Health Research, [S. l.], v. 2, n. 3, p. 390–401, 2023. DOI: 10.56238/isevjhv2n3-008. Disponível em: https://sevenpubl.com.br/ISJHR/article/view/1890. Acesso em: 21 aug. 2025.