5Wen WP, Su ZZ, Wang ZF, et al. Anesthesia tbr tracheobronchial foreign bodies removal via self-retaining laryngoscopy and Hopkins telescopy in children [ J 1. European Archives of Pto-rhino-laryngol- ogy,2012,269(3) :911 -916.
6Ohno S, Hirano S, Tateya I, et al. Management of" vocal fold lesions in difficult larynge exposure patients in phonomicrosurgery [ J ], Auris Nasus Larynx,2011,38(3 ) :373 -380.
8Roh JL, Lee YW. Prediction of difficult laryngeal exposure in patients undergoing microlaryngosurgery [ J ]. Ann Otol Rhinol Laryngo1,2005,114( 8 ) :614 - 620.
9Hochman II, Zeitels SM, Heaton JT. Analysis of the forces and position required for direct laryngoscopic exposure of the anterior vocal folds [ J ]. Ann Otol Rhinol Laryngol, 1999,108 (8) :715 - 724.
10Bannister F, Macbeth R. Direct laryngoscopy and tracheal intubation [J]. Lancet, 1944,244(6 331 ) :651 -654.
