3Nam SI,Yu GI,Kim HJ,et al. A polymorphism at -1607 2G in the matrix metalloproteinase-1 (MMP-1) increased risk of sudden deafness in Korean population but not at - 519A/G in MMP-I[J]. The Laryngoscope ,2011,121 ( 1 ) : 171-175.
5Horii A,Osaki Y,Kitahara T, et al. Endolymphatic hy- drops in Meniere's disease detected by MRI after in- tratympanic administration of gadolinium: comparison with sudden deafness[J]. Acta Oto Laryngologica,2011,131 (6) :602-609.