1 Department of Pediatrics (CJ Orr), Vanderbilt University Medical Center, Nashville, Tenn. Electronic address: colin.orr@vumc.org.
2 Division of Neurology (E Catenaccio), Children's Hospital of Philadelphia, Philadelphia, Pa.
3 Department of Family Medicine (EP Fraher), University of North Carolina at Chapel Hill, Chapel Hill, NC; Cecil G Sheps Center for Health Services Research (EP Fraher), University of North Carolina at Chapel Hill, Chapel Hill, NC.
4 Department of Pediatrics (HK Simon), Emory University School of Medicine, Atlanta, Ga; Pediatric Emergency Medicine (HK Simon), Children's Hospital of Atlanta, Atlanta, Ga.
5 Department of Pediatrics (CJ Stille), University of Colorado School of Medicine, Aurora, Colo.
6 American Board of Pediatrics (AL Turner and LK Leslie), Chapel Hill, NC.
7 American Board of Pediatrics (AL Turner and LK Leslie), Chapel Hill, NC; Department of Pediatrics (LK Leslie), Tufts University School of Medicine, Boston, Mass.