1. Division of Violence Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA, USA
2. The Ohio State University, Columbus, OH, USA
3. Emory University, Atlanta, GA, USA
4. Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
5. Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA