6Yanagihara N. Grading of facial palsy[ M]//Fisch U. Facial nervesurgery, proceedings of the Third Inter - national Symposium on Facial Nerve Surgery. Zurich: Kugler Med Pubications, 1976:337 - 343.
7Berg Thomas,Jonsson Lars,EngstrSm Mats. Agnement between the Sun- nybrook,House -Brackmann, and Yanagihara facial nerve grading sys- tems in Bell g palsy [ J ]. Otology & Neumtology,2004:256.
