1. Departments of Pediatrics and Medicine, Emory University School of Medicine, Atlanta, Georgia
2. Department of Pediatrics, Winthrop University Hospital, Mineola, New York
3. Department of Pediatrics, CFRI at Le Bonheur Children's Hospital, University of Tennessee Center for Health Sciences, Memphis, Tennessee
4. Department of Pediatrics, Texas Children's Hospital, Houston, Texas
5. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
6. Department of Pediatrics, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
7. Department of Pediatrics, SUNY Upstate Medical University, Syracuse, New York
8. Department of Pediatrics, Akron Children's Hospital, Akron, Ohio
9. Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, California
10. Department of Statistics, United BioSource Corporation, Ann Arbor, Michigan
11. Department of U.S. Medical Affairs, AstraZeneca, Gaithersburg, Maryland