1. Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, Maryland;
2. Department of Pediatrics, Baylor College of Medicine, Houston, Texas;
3. Office of Clinical Affairs, Commonwealth Medicine, University of Massachusetts Medical School, Quincy, Massachusetts;
4. Department of Research, American Academy of Pediatrics, Elk Grove Village, Illinois; and
5. Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado