[New types of hearing aids].
Ylikoski
J
J
Korvaklinikka, Helsinki.
Raivio
M
M
D000818:Animals; D003054:Cochlear Implants; D003638:Deafness / Q000523:psychology; D005387:Finland; D006310:Hearing Aids; D006311:Hearing Disorders / Q000209:etiology / Q000523:psychology / Q000601:surgery*; D006801:Humans; D009998:Ossicular Prosthesis