allograft tympanoplasties on 68 ears done between october , 1980 and december , 1986 were analyzed from the viewpoint of graft take rate and hearing improvement , and also the results were compared between draining and nondraining ears as well as among three stabilizing methods of the transplanted tympanic membrane ( type i : allograft tympanic membrane ( atm ) covered with reflected epithelium ;
C0018767
hearing
C0013443
ears