Surrogate endpoints for overall survival in randomized clinical trials testing immune checkpoint inhibitors: a systematic review and meta-analysis oleh Isabella Sala, Isabella Sala, Eleonora Pagan, Laura Pala, Chiara Oriecuia, Chiara Oriecuia, Marco Musca, Marco Musca, Claudia Specchia, Tommaso De Pas, Javier Cortes, Javier Cortes, Javier Cortes, Giuseppe Giaccone, Michael Postow, Richard D. Gelber, Vincenzo Bagnardi, Fabio Conforti, Fabio Conforti