1 Division of General Pediatrics and Adolescent Medicine (CJ Orr), Department of Pediatrics, University of North Carolina at Chapel Hill; Cecil G. Sheps Center for Health Services Research (CJ Orr), University of North Carolina at Chapel Hill. Electronic address: colin_orr@med.unc.edu.
2 Department of Pediatrics (JL Raphael and MA Lopez), Baylor College of Medicine, Houston, Tex; Center for Child Health Policy and Advocacy at Texas Children's Hospital (JL Raphael and MA Lopez), Houston, Tex.
3 Division of General and Community Pediatrics (M Klein and AMS Corley), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; University of Cincinnati College of Medicine (M Klein and AMS Corley), Department of Pediatrics, Cincinnati, Ohio.
4 Department of Pediatrics (A Tatem), Eastern Virginia Medical School, Norfolk, Va.
5 Department of Pediatrics (S-TT Li), University of California Davis, Sacramento, Calif.
6 Department of Pediatrics (MB Pitt), University of Minnesota Medical School, Minneapolis, Minn.
7 Department of Pediatrics (S Gustafson), Harbor-UCLA Medical Center, David Geffen School of Medicine at University of California, Los Angeles, Calif.