1. Division of Adolescent Medicine, Department of Pediatrics, and
2. Division of Pediatric Practice, American Academy of Pediatrics, Elk Grove Village, Illinois;
3. Division of Research and Statistics, Cooper University Hospital, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Camden, New Jersey;
4. Department of Pediatrics, Arnold Palmer Hospital for Children, Florida State University College of Medicine, Orlando, Florida;
5. Department of Pediatrics, Stanford University, Palo Alto, California;
6. Division of Research and Statistics, Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio;
7. Department of Pediatrics, University of Vermont College of Medicine, Burlington, Vermont;
8. Wellstart International, Shelburne, Vermont; and
9. Departments of Pediatrics and Obstetrics and Gynecology, University of Rochester, School of Medicine and Dentistry, Rochester, New York