Guevara Valmaña, O. I., Beyuma Mora, H. E., Chavez, C. G., Murguia Zamora, L. M., Gil Loaeza, E., & Palacio Pizano, L. F. (2020). Gallstone ileus, the forgotten one: a rare cause of intestinal perforation and a case report. International Journal of Research in Medical Sciences, 8(6), 2313–2315. https://doi.org/10.18203/2320-6012.ijrms20202094