Where is the point of no hearing damage?
D001299:Audiometry; D003638:Deafness / Q000209:etiology* / Q000517:prevention & control; D004781:Environmental Exposure; D006077:Government Agencies; D006801:Humans; D008452:Maximum Allowable Concentration; D009622:Noise / Q000009:adverse effects*; D009784:Occupational Diseases / Q000209:etiology* / Q000517:prevention & control; D009787:Occupational Medicine / Q000592:standards*; D014481:United States