Voice quality after endoscopic laser surgery and radiotherapy for early glottic cancer: objective measurements emphasizing the Voice Handicap Index - Núñez Batalla, F; Caminero Cueva, M J; Señaris González, B; Llorente Pendás, J L; Gorriz Gil, C; López Llames, A; Alonso Pantiga, R; Suárez Nieto, C (Eur Arch Otorhinolaryngol, 2008)