Association of Coloproctology of Great Britain & Ireland (ACPGBI): Guidelines for the Management of Cancer of the Colon, Rectum and Anus (2017) – Diagnosis, Investigations and Screening. (20th June 2017) - Cunningham, Chris; Leong, Kai; Clark, Susan; Plumb, Andrew; Taylor, Stuart; Geh, Ian; Karandikar, Sharad; Moran, Brendan