2De Assis JL, Marchiori PE, Scarf M. Atrophy of the tongue with persistent articulation disorder in myasthenia gravis. Re- port of ten patients[J]. Auris Nasus Larynx,1994(21): 215 218.
3Lavrnic D, Losen M, Vujic A, et al. The features of myasthe- nia gravis with autoantibodies to MuSK[J]. J Neurol Neuro surg Psychiatry, 2005(76) : 1099 1102.