2Troulis MJ, Williams WB, Kaban LB. Endoscopic mandibular condylectomy and reconstruction:early clinical results[ J]. J O- ral Maxillofac Surg,2004,62(4) :460-465.
3Grant S, Aitchison T, Henderson E, et al. A comparison of the reproducibility and the sensitivity to change of visual analogue scales, Borg scales, and Likert scales in normal subjects during submaximal exercise [ J ]. Chest, 1999,116 ( 5 ) : 1208 - 1217.