ERGÜN, U. Monoclonal Gammopathy with Isolated CA 19-9 Elevation: A Rare Case: Case Report. Acta Medica Ruha, [S. l.], v. 3, n. 3, p. 143–145, 2025. DOI: 10.5281/zenodo.17166520. Disponível em: https://actamedicaruha.com/index.php/pub/article/view/174. Acesso em: 7 oct. 2025.