1. University of Utah, Intermountain Primary Children’s Hospital, Salt Lake City, UT, USA
2. The Carl and Edyth Lindner Center for Research and Education and The Christ Hospital, Cincinnati, OH, USA
3. University of California Los Angeles (UCLA) Health, Los Angeles, CA, USA
4. St. Paul's Hospital & University of British Columbia, Vancouver, British Columbia, Canada
5. Cedars-Sinai, Smidt Heart Institute, Los Angeles, CA, USA
6. University of Ottawa Heart Institute, Ottawa, Ontario, Canada
7. The Children’s Heart Clinic, Children’s Minnesota, Mayo Clinic-Children’s Minnesota Cardiovascular Collaborative, Minneapolis, MN, USA
8. University of Queensland and Griffith University, Queensland, Australia
9. University of Toronto, Toronto, Ontario, Canada
10. The Royal Brompton Hospital, London, England
11. Nationwide Children’s Hospital, The Ohio State University College of Medicine, Columbus, OH, USA