88OValidation of the American Joint Committee on Cancer new prognostic stage groups for HER2-positive breast cancer patients treated with adjuvant chemotherapy and trastuzumab in the prospective ShortHER trial. (13th May 2019) - Dieci, M V; Bisagni, G; Brandes, A A; Frassoldati, A; Donadio, M; Garrone, O; Piacentini, F; Balduzzi, S; Guarneri, V; Conte, P F