1. Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania;
2. Pediatrics, University of Washington School of Medicine, Seattle, Washington;
3. Neonatology, Holy Cross Health, Silver Spring, Maryland;
4. Pediatrics, University of California San Francisco, San Francisco, California;
5. Pediatrics, Southern California Kaiser Permanente, Downey, California;
6. Pediatrics, Oregon Health & Science University, Portland, Oregon; and
7. Academic Pediatric Association, McLean, Virginia