1. University of Southern Maine, Department of Exercise, Health, and Sport Sciences, PO Box 9300, Portland, ME 04104.
2. Boise State University, Department of Community and Environmental Health, 1910 University Drive, Boise, ID 83725.
3. West Virginia University School of Public Health, 1 Medical Center Drive, P.O. Box 9190, Morgantown, W V 26506-9190.