OC-0391: First results of the Preoperative Accelerated Partial Breast Irradiation (PAPBI) trial. (April 2015) - Bosma, S.C.J.; Van der Leij, F.; Van de Vijver, M.J.; Rivera, S.; Foukakis, T.; Van den Bongard, H.J.G.D.; Vreeswijk, S.A.O.J.; Bartelink, H.; Rutgers, E.J.; Elkhuizen, P.H.M.