6Lutz CK, Johnson J, Wagner K,et al. Supraglottic carcinoma:patterns of recurrence[J]. Ann Otol Rhinol Laryngol,1990,99:12-17.
7Eugene M, Aijaz A. Management of carcinoma of the supraglottic larynx: evaluation current concepts and future trends[J].Laryngoscope,1996,106:559-566.