Domínguez Alvarado, G. A., M. G. Quintero Arias, M. Bermúdez Mantilla, L. E. López Gómez, and L. Hurtado-Quiros. “Methylene Blue, an Option for Minimally Invasive Pre-Procedural Colorectal Cancer Marking. Case Report”. Revista Médica De Risaralda, vol. 29, no. 1, June 2023, doi:10.22517/25395203.25097.