A survey of Medresco hearing aids issued at a provincial centre.
D000368:Aged; D000375:Aging / Q000502:physiology; D001294:Attitude to Health; D003638:Deafness / Q000175:diagnosis; D004739:England; D005260:Female; D006306:Health Surveys; D006310:Hearing Aids; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000175:diagnosis; D010040:Otosclerosis / Q000175:diagnosis; D013223:Statistics as Topic