1. Division of Adolescent and Young Adult Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
2. Futures Without Violence, The Presidio, San Francisco, California, USA
3. Department of Pediatrics, Children’s Mercy, Kansas, Missouri, USA
4. Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Kansas, Missouri, USA
5. Department of Pediatrics, University of Kansas School of Medicine, Kansas, Kansas, USA
6. Division of General Academic Pediatrics, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA