1. Department of Pediatrics (E.F.G., R.S., R.W.G., D.M.R., A.G.F.), Children’s Hospital of Philadelphia, PA.
2. Department of Biomedical and Health Informatics (J.M.M., R.W.G., A.G.F.), Children’s Hospital of Philadelphia, PA.
3. Department of Pediatrics, Larner College of Medicine, University of Vermont, Burlington (R.C.W.).
4. Pediatric Research in Office Settings Research Network, American Academy of Pediatrics, Media, PA (A.G.F.).