1. Department of Pediatrics, Stanford University, Stanford, CA 94305.
2. Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455.
3. Department of Pediatrics, University of Nebraska, Lincoln, NE 68588.
4. Department of Pediatrics, University of Colorado, Denver, CO 80218.
5. Department of Pediatrics, Johns Hopkins University, Baltimore, MD 21287.
6. Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL 35233.
7. Department of Pediatrics, University of Florida, Gainesville, FL 32611.
8. Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213.
9. Division of Respiratory Diseases, Children's Hospital Boston, Boston, MA 02115.
10. Division of Pediatric Pulmonology, Massachusetts General Hospital, Boston, MA 02114.
11. Department of Pediatrics, Washington University at St. Louis, St. Louis, MO 63110.
12. Department of Pediatrics, University of California San Diego, San Diego, CA 92123.
13. Pulmonary Division, Children's Hospital Seattle, and CF Therapeutics Development Network Coordinating Center, Seattle, WA 98105.
14. Targeted Genetics, Seattle, WA 98101.