|1||2007 - 08/29/2007 - Clarification of 1910.95 and 1904 regarding physicians and audiologists roles in determining work-relatedness of worker hearing loss.|
|2||2005 - 09/09/2005 - Revising baseline audiogram when there is a standard threshold shift in only one ear.|
|3||2003 - 05/08/2003 - Baseline audiogram revision due to persistent STS or improved thresholds; revision must be made for each ear separately.|
|4||1989 - 11/17/1989 - Identification of a standard threshold shift (STS) for individuals with a very poor sense of hearing.|
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