MALENIE, Renuka; LEONE, Lisa; GILLILAND, M G F. Sigmoid gallstone ileus: a challenging diagnosis. Autopsy and Case Reports, São Paulo, v. 9, n. 2, p. e2019102, 2019. DOI: 10.4322/acr.2019.102. Disponível em: https://www.revistas.usp.br/autopsy/article/view/161001.. Acesso em: 3 may. 2024.