1. Associate Professor, School of Public Health, West Virginia Univ., 1 Medical Center Dr., P.O. Box 9190, Morgantown, WV 26506.
2. Associate Professor and Director, College of Public Service and Community Solutions, Arizona State Univ., 411 N. Central Ave., Suite 400, Phoenix, AZ 85004 (corresponding author).
3. Associate Professor, Dept. of Political Science, Univ. of Oklahoma, 660 Parrington Oval, Norman, OK 73019-0390.