1. Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
2. Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
3. College of Arts and Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
4. School of Law, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA