Hearing aid options. Looking good and sounding better.
D003258:Consumer Behavior; D004423:Ear; D006310:Hearing Aids; D034381:Hearing Loss / Q000534:rehabilitation*; D006801:Humans; D011474:Prosthesis Design / Q000379:methods*; D019919:Prosthesis Implantation / Q000379:methods*; D013067:Speech Perception