Zoledronic acid boosts γδ T-cell activity in children receiving αβ+ T and CD19+ cell-depleted grafts from an HLA-haplo-identical donor oleh A. Bertaina, A. Zorzoli, A. Petretto, G. Barbarito, E. Inglese, P. Merli, C. Lavarello, L. P. Brescia, B. De Angelis, G. Tripodi, L. Moretta, F. Locatelli, I. Airoldi