[1] Gustave Roussy, Dept Cancerol Cervicofaciale, F-94805 Villejuif, France
[2] Gustave Roussy, Dept Radiotherapie, F-94805 Villejuif, France
[3] CHU Bretonneau, Dept ORL & Chirurg Cervicofaciale, 2 Blvd Tonnelle, F-37000 Tours, France
[4] Aix Marseille Univ, Serv ORL & Chirurg Cervicofaciale, CHU Timone, 264 Rue St Pierre, F-13385 Marseille 05, France