1. Department of Occupational and Environmental Health Sciences, West Virginia University School of Public Health, WVU Injury Control Research Center, Morgantown, WV, USA
2. Department of Work Environment, University of Massachusetts Lowell, Lowell, MA, USA
3. Department of Political Science, University of Massachusetts Lowell, Lowell, MA, USA
4. Massachusetts Department of Public Health, Boston, MA, USA
5. West Virginia University, Injury Control Research Center, Morgantown, WV, USA