1. Division of Adolescent and Young Adult Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
2. Futures Without Violence, San Francisco, California, USA.
3. US Department of Health and Human Services, Health Resources and Services Administration, Office of Women's Health, Rockville, Maryland, USA.
4. US Department of Health and Human Services, Health Resources and Services Administration, Bureau of Primary Health Care, Rockville, Maryland, USA.
5. US Department of Health and Human Services, Administration for Children and Families, Family Youth Services Bureau, Family Violence Prevention and Services Program, Washington, District of Columbia, USA.