we examined 244 healthy ears ( 18 % sniff-positive ) , 21 ears with a traumatic perforation of the tympanic membrane ( 10 % sniff-positive ) , 46 ears with chronic mesotympanic otitis ( 17 % sniff-positive ) and 40 ears with cholesteatoma ( 60 % sniff-positive ) .
C0013443
ears
C0155490
ears