1. PolicyLab, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
2. Center for Pediatric Clinical Effectiveness, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
3. Craig Dalsimer Division of Adolescent Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
4. Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
5. Adolescent Initiative, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
6. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.