Sentinel lymph node surgery after neoadjuvant chemotherapy in patients with T2 to T4, N0 and N1 breast cancer by Andreis, D, Bonardi, S, Allevi, G, Aguggini, S, Gussago, F, Milani, M, Strina, C, Spada, D, Ferrero, G, Ungari, M, Rocca, A, Nanni, O, Roviello, G, Berruti, A, Harris, A, Fox, S, Roviello, F, Polom, K, Bottini, A, Generali, D