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Figure 1. Mean audiograms for male nonveterans and veterans in Epidemiology of Hearing Loss Study. Data depict mean audiograms grouped by (a) leftear (LE), (b) right ear (RE) nonveterans ([filled symbols] and veterans [times and open symbols]), (c) nonveterans, and (d) veterans (LE [squares and times symbols] and RE [circles]). Source: Specifications for audiometers. ANSI S3.6-1989. New York (NY): American National Standards Institute; 1989. Wilson RH, Noe CM, Cruickshanks KJ, Wiley TL, Nondahl DM. Prevalence and degree of hearing loss among males in Beaver Dam cohort: Comparison of veterans and nonveterans. J Rehabil Res Dev. 2010;47(6):505–20. DOI:10.1682/JRRD.2009.10.0169