Association of Coloproctology of Great Britain & Ireland (ACPGBI): Guidelines for the Management of Cancer of the Colon, Rectum and Anus (2017) – Anal Cancer. (20th June 2017) - Geh, Ian; Gollins, Simon; Renehan, Andrew; Scholefield, John; Goh, Vicky; Prezzi, Davide; Moran, Brendan; Bower, Mark; Alfa‐Wali, Maryam; Adams, Richard