University of California at San Diego, San Diego, California, United States
Children's Diagnostic and Treatment Center, Fort Lauderdale, Florida, United States
Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States
Tulane University, New Orleans, Louisiana, United States
Children's Diagnostic and Treatment Center, Fort Lauderdale, Florida, United States
Stoger Hospital of Cook County, Chicago, Illinois, United States
University of North Carolina, Chapel Hill, North Carolina, United States
University of Washington, Seattle, Washington, United States
University of North Carolina, Chapel Hill, North Carolina, United States
Cambridge Health Alliance, Medford, Massachusetts, United States
University of North Carolina, Chapel Hill, North Carolina, United States
Marsico Lung Institute, Chapel Hill, North Carolina, United States
Washington University School of Medicine, St. Louis, Missouri, United States