Phase I/II trial evaluating carbon ion radiotherapy for the treatment of recurrent rectal cancer: the PANDORA-01 trial
Stephanie E Combs*, Meinhard Kieser, Daniel Habermehl, Jürgen Weitz, Dirk Jäger, Piero Fossati, Roberto Orrechia, Rita Engenhart-Cabillic, Richard Pötter, Manjit Dosanjh, Oliver Jäkel, Markus W Büchler and Jürgen Debus