6Johns MM. Update on the etiology,diagnosis, and treatment of vocal fold nodules, polyps, and cysts. Curt opin otolaryngol Head Neck Surg,2003,11 (6) :456 -461.
7HSiung MW. VideolaryngostroboscopiC observation of mucus layer during vocal cord vibration in patients with vocal nodules beforeand after surgery [ J ]. Acta Otolaryngol,2004,124 ( 2 ) : 186 - 191.
8Wallis L, Jackson- Menaldi C, Holland W, et al. Vocal fold nodule vs. vocal fold polyp:answer from surgical pathologist and voice pathologist point of view [ J ]. J Voice,2004,18 ( 1 ) : 125 - 129.