Clinical application of mathematical calculators to predict recurrence and survival in luminal breast cancer: a retrospective analysis from two independent datasets of EUSOMA certified centers. Issue 2 (February 2021) - Iacuzzo, Cristiana; Giudici, Fabiola; Scomersi, Serena; Zanconati, Fabrizio; Ceccherini, Rita; Bortul, Marina; Generali, Daniele