Hyperpigmentation in the oral mucosa of patients using chloroquine and hydroxychloroquine: A literature review. Research, Society and Development, [S. l.], v. 10, n. 5, p. e30010514528, 2021. DOI: 10.33448/rsd-v10i5.14528. Disponível em: https://www.rsdjournal.org/rsd/article/view/14528. Acesso em: 5 dec. 2025.