• Baylor College of Medicine, Houston, TX
• Boston University School of Medicine, Boston, MA
• Centers for Disease Control, Atlanta, GA
• The Children's Hospital, Denver, CO
• Children's Hospital Boston, Boston, MA
• Children's Hospital Medical Center, Cincinnati, OH
• Children's Hospital of Philadelphia, Philadelphia, PA
• Children's Hospital of Pittsburgh, Pittsburgh, PA
• Children's Hospital San Diego, San Diego, CA
• Children's Mercy Hospital, Kansas City, MO
• Children's Memorial Hospital, Chicago, IL
• Children's National Medical Center, Washington, DC
• The Cleveland Clinic, Cleveland, OH
• Data Technology Coordinating Center, University of South Florida, Tampa, FL
• David Geffen School of Medicine at the University of California, Los Angeles, CA
• Duke University Medical Center, Durham, NC
• East Carolina University, Brody School of Medicine, Greenville, NC
• Greenwood Genetics Center, Greenwood, SC
• H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
• Harvard/Brigham & Women's Hospital, Boston, MA
• Howard Hughes Medical Institute at The University of California, San Fransisco, CA
• Johns Hopkins University School of Medicine, Baltimore, MD
• Kansas University Medical Center, Kansas City, KS
• Mayo Clinic College of Medicine, Rochester, MN
• Medical University of South Carolina, Charleston, SC
• Mount Sinai School of Medicine, New York, NY
• National Heart, Lung, and Blood Institute, Bethesda, MD
• National Institute of Neurological Disorders and Stroke (NINDS), Bethesda, MD
• National Jewish Medical Center, Denver, CO
• New York State Psychiatric Institute, Columbia College of Physicians & Surgeons, New York, NY

• Oregon Health and Sciences University, Portland, OR
• Penn State - Milton S Hershey Medical Center, Hershey, PA
• Rainbow Babies and Children's Hospital, Cleveland, OH
• Texas Children's Hospital, Houston, TX
• University of Rochester Medical Center, Rochester, NY
• University of Alabama at Birmingham, Birmingham, AL
• University of California at Irvine Medical Center, Irvine, CA
• University of California at Los Angeles (UCLA), Los Angeles, CA
• University of California, San Francisco, CA
• University of Cincinnati Medical Center, Cincinnati, OH
• University of Colorado at Denver and Health Sciences Center, Denver, CO
• University of Florida Health Science Center, Gainesville, FL
• University of Florida Medical Center, Gainesville, FL
• University of North Carolina, Chapel Hill, NC
• University of Texas Health Center, Tyler, TX
• University of Texas Southwestern Medical Center, Dallas, TX
• University of Washington, Seattle, WA
• University of Wisconsin, Madison, WI
• Vanderbilt University Medical Center, Nashville, TN
• Washington University School of Medicine, St. Louis, MO
• Yale University School of Medicine, New Haven, CT

International:

• Centre for Neuromuscular Disease, London, UK
• The Hospital for Sick Children, Toronto, Ontario
• International Medical Center of Japan, Tokyo, Japan
• King's College Hospital, London, UK
• London Health Sciences Centre, Ontario, CA
• Mt. Sinai Hospital, Toronto, Ontario, CA
• Niigata University Medical and Dental Hospital, Tokyo, Japan
• Peter MacCallum Cancer Institute, Victoria, Australia
• St. Joseph's Hospital, Hamilton, Ontario, CA
• University of Lyon, Lyon, France
• University of São Paulo, São Paulo, Brasil
• University Children's Hospital, Zurich, Switzerland