A phase III randomised trial on the addition of a contact X-ray brachytherapy boost to standard neoadjuvant chemo-radiotherapy for organ preservation in early rectal adenocarcinoma: 5 year results of the OPERA trial

D. Baron, Tanguy Pace Loscos, Renaud Schiappa, N. Barbet, Esmaeal Rayat Dost, Sonia Ben Dhia, Saïd Soltani, Laurent Mineur, I. Martel, Samantha R. Horn, C Picardi, Alexandra Stewart, Eddy Cotte, R. Coquard, G. Baudin, Ludovic Evesque, A.S. Dhadda, Arthur Sun Myint, Jean‐Pierre Gérard, J. Doyen