Clark, William W.; Bohl, Carl D.
Program in Audiology and Communication Sciences, CID at Washington University School of Medicine, St. Louis, Missouri.
The first author has provided consulting services for manufacturers of emergency firefighting equipment. No external funding was received for this study.
Interested readers may contact the first author for copies of the original data and analyses created in preparation of this manuscript.
Address for correspondence: William W. Clark, Program in Audiology and Communication Sciences, Washington University School of Medicine, Campus Box 8042, 660 S. Euclid Avenue, St. Louis, MO 63110.
Received February 25, 2004; accepted February 10, 2005