Flores-Altamirano, Monserrat, et al. “Clinical and Histopathological Characteristics of Malignant Colon Tumors by Location”. Revista Médica Del Instituto Mexicano Del Seguro Social, vol. 61, no. 5, Sept. 2023, pp. 610-6, https://revistamedica.imss.gob.mx/index.php/revista_medica/article/view/4876.