Are Colon and Rectal Cancer Two Different Tumor Entities? A Proposal to Abandon the Term Colorectal Cancer oleh Stephan Paschke, Sakhavat Jafarov, Ludger Staib, Ernst-Dietrich Kreuser, Catharina Maulbecker-Armstrong, Marc Roitman, Torbjörn Holm, Curtis C. Harris, Karl-Heinrich Link, Marko Kornmann