Impiego di tramadolo nelle diverse patologie dolorose. Farmeconomia. Health economics and therapeutic pathways, [S. l.], v. 6, n. 4, p. 385–396, 2005. DOI: 10.7175/fe.v6i4.853. Disponível em: https://journals.seedstm.com/index.php/FE/article/view/853. Acesso em: 29 oct. 2025.