TORRES-FERNÁNDEZ, Gilberto. Pigmented Lesion of the Oral Cavity with Eight Years Follow-up. Puerto Rico Health Sciences Journal, [S. l.], v. 19, n. 2, 2014. Disponível em: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1162. Acesso em: 5 nov. 2025.