[Atlanta, Ga.] : Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health ; [Springfield, Va. :] : [National Technical Information Service, distributor], [2004]
Also available via Internet from CDC web site. Address as of 3/14/05: http://www.cdc.gov/niosh/hhe/reports/pdfs/2004-0075-2944.pdf; current access available via PURL.