1. Department of Pediatrics, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire;
2. Department of Pediatrics, UMass Medical Center, University of Massachusetts Medical School, Worcester, Massachusetts;
3. Department of Pediatrics, Fletcher Allen Health Care, University of Vermont Medical School, Burlington, Vermont;
4. Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts;
5. Department of Pediatrics, Tufts University School of Medicine, Boston, Massachusetts;
6. Department of Pediatrics, Maine Medical Center, Portland, Maine;
7. Department of Pediatrics, Hasbro Children’s Hospital, Warren Alpert Medical School at Brown University, Providence, Rhode Island;
8. Department of Pediatrics, Harvard Vanguard Medical Associates, Boston, Massachusetts;
9. Department of Pediatrics, Connecticut Children’s Medical Center, University of Connecticut, Hartford, Connecticut;
10. Department of Pediatrics, Division of Pediatric Cardiology, Boston Children’s Hospital, Boston, Massachusetts; and
11. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts