Three-dimensional (3D) magnetic resonance volume assessment and loco-regional failure in anal cancer: early evaluation case-control study oleh Hema Sekhar, Rohit Kochhar, Bernadette Carrington, Thomas Kaye, Damian Tolan, Mark P. Saunders, Matthew Sperrin, David Sebag-Montefiore, Marcel van Herk, Andrew G. Renehan