Clinical features and prognostic factors in patients with head and neck cancer: Results from a multicentric study.

Emanuele Leoncini, Vladimir Vukovic, Gabriella Cadoni, Roberta Pastorino, Dario Arzani, Cristina Bosetti, Cristina Canova, Werner Garavello, Carlo La Vecchia, Milena Maule, Livia Petrelli, Enrico Pira, Jerry Polesel, Lorenzo Richiardi, Diego Serraino, Lorenzo Simonato, Walter Ricciardi, Stefania Boccia