By JANE E. BRODY Hearing loss, a disability currently untreated in about 85 percent of those affected, may be the nation’s most damaging and costly sensory handicap. It is a hidden disability, often not obvious to others or even to...
By JANE E. BRODY Hearing loss, a disability currently untreated in about 85 percent of those affected, may be the nation’s most damaging and costly sensory handicap. It is a hidden disability, often not obvious to others or even to...