Tuning in to hearing aids.  Too many Americans are living with untreated hearing loss.
D001309:Auditory Threshold; D006304:Health Status; D006310:Hearing Aids / Q000145:classification* / Q000706:statistics & numerical data*; D034381:Hearing Loss / Q000628:therapy*; D006801:Humans; D008875:Middle Aged; D011788:Quality of Life