Saenz, L., Portillo, E. M. ., Bravo, A. B. ., Vallejo, F. R. ., González, O. D. ., Rossano, M. M. ., … Nuevo, J. J. L. . (2020). Gallstone Illeus, a difficult diagnosis: Case Report. British Journal of Healthcare and Medical Research, 7(6), 01–05. https://doi.org/10.14738/bjhmr.76.9341