1. aAmerican Board of Pediatrics, Chapel Hill, North Carolina
2. bTufts University School of Medicine, Boston, Massachusetts
3. cUniversity of North Carolina School of Medicine at Chapel Hill, ChapelHill, North Carolina
4. dThe Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center and the David Geffen School of Medicine at UCLA, Torrance, California
5. eStanford University School of Medicine, Palo Alto, California
6. fCystic Fibrosis Foundation, Bethesda, Maryland
7. gBoston Medical Center, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts