title: The real barrier in hearing protection is indifference.
authors.forename: Robert
authors.initials: R
authors.lastname: Hassebrock
mesh_terms: D001364:Awareness; D002138:Calibration; D003638:Deafness / Q000517:prevention & control; D004430:Ear Protective Devices / Q000592:standards; D006801:Humans; D016272:Occupational Health