Affiliation: | 1. Department of Health ScienceThe University of Alabama, Russell Hall 471, Tuscaloosa, AL 35487‐0311;2. Public Health Studies, School of Health and Applied Human SciencesUniversity of North Carolina Wilmington, Hanover 119C, Wilmington, NC 28403;3. Department of Health ScienceThe University of Alabama, Russell Hall 457, Tuscaloosa, AL 35487‐0311 |