International consensus guidelines on Clinical Target Volume delineation in rectal cancer

Vincenzo Valentini, Maria Antonietta Gambacorta, Brunella Barbaro, Giuditta Chiloiro, Claudio Coco, Prajnan Das, Francesco Fanfani, Ines Joye, Lisa Kachnic, Philippe Maingon, Corrie Marijnen, Samuel Ngan, Karin Haustermans