1 Heart Center, Division of Cardiology, Department of Pediatrics, Children's Health, UT Southwestern Medical Center, Dallas, TX, USA. katherine.hansen@utsouthwestern.edu.
2 Division of Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
3 Department of Pediatrics, Congenital Heart Center, University of Florida, Gainesville, FL, USA.
4 Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
5 Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
6 Department of Pediatric Cardiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA.
7 Division of Pediatric Cardiology, Oregon Health and Science University, Portland, OR, USA.
8 Division of Cardiology, Children's National Hospital, The George Washington University School of Medicine & Health Sciences, Washington, DC, USA.
9 University of California San Diego, Rady Children's Hospital, San Diego, CA, USA.
10 Department of Pediatric Cardiology, Philippine Heart Center, Manila, Philippines.
11 GCS Physiotherapy College, GCSMCH & RC, Ahmedabad, India.
12 Division of Cardiology, Inova L.J. Murphy Children's Hospital, Falls Church, VA, USA.