VILJOEN, Margaretha; CLAASSEN, Nicolaas. Pellagra, then and now. Medicina Historica, [S. l.], v. 6, n. 3, p. e2022042, 2022. Disponível em: https://mattioli1885journals.com/index.php/MedHistor/article/view/13508.. Acesso em: 9 jan. 2025.