1. Injury and Violence Prevention Program, Department of Surgery, Virginia Commonwealth University, Richmond, VA 23298, USA
2. School of Social Work, Virginia Commonwealth University, Richmond, VA 23284-2027, USA
3. Department of Community Research and Evaluation, Denver Zoological Foundation, Denver, CO 80205, USA
4. School of Social Work, Colorado State University, Fort Collins, CO 80521, USA
5. Department of Sociology and Criminology & Law, University of Florida, Gainesville, FL 32603, USA
6. Traumatic Stress Research Consortium, Kinsey Institute, Indiana University, Bloomington, IN 47405, USA
7. Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA