Benedetti, Mario, et al. “Synchronous and Metachronous Tumours of Colon Cancer. A Review of 5 Years of Experience (1999-2004)”. Annali Italiani Di Chirurgia, vol. 77, no. 3, May 2006, pp. 233-40, https://annaliitalianidichirurgia.it/index.php/aic/article/view/2574.