13th St. Gallen international breast cancer conference 2013: primary therapy of early breast cancer evidence, controversies, consensus - opinion of a German team of experts (Zurich 2013) - Untch, Michael; Gerber, Bernd; Harbeck, Nadia; Jackisch, Christian; Marschner, Norbert; Möbus, Volker; Minckwitz, Gunter von; Loibl, Sibylle; Beckmann, Matthias Wilhelm; Blohmer, Jens-Uwe; Costa, Serban-Dan; Decker, Thomas; et al. (Breast care, 2013)