You can obtain additional information on this subject from the following sources:
American Academy of Audiology
11730 Plaza America Drive, Suite 300 Reston, VA 20190
Voice:
Email: infoaud@audiology.org
Internet: http://www.audiology.org
National Institute on Deafness and Other Communication Disorders National Institutes of Health
31 Center Drive, MSC 2320 Bethesda, MD USA
Voice: (301)
Email: nidcdinfo@nidcd.nih.gov
Internet: http://www.nidcd.nih.gov/health/hearing
National Institute for Occupational Safety and Health
1600 Clifton Rd Atlanta GA 30333 USA
Voice:
Internet: http://www.cdc.gov/niosh/topics/noise/default.html