Ventricular Outflow Obstruction

• Prince Charles Hospital — Chermside, Queensland, Australia
• Monash Heart — Clayton, Victoria, Australia

• Cedars-Sinai Medical Center — Los Angeles, California, United States
• Washington Hospital Center — Washington D.C., District of Columbia, United States
• Morton Plant Hospital — Clearwater, Florida, United States
• Emory University Hospital — Atlanta, Georgia, United States

• Loma Linda University Health — Loma Linda, California, United States
• Children's Hospital of Los Angeles — Los Angeles, California, United States
• University of California, Los Angeles Medical Center — Los Angeles, California, United States
• Rady Children's Hospital and Health Center — San Diego, California, United States

• Icahn School of Medicine at Mount Sinai — New York, United States
• Hôpital Privé Parly 2 — Le Chesnay, France
• Azienda Ospedaliero - Ferrarotto Alessi — Catania, Italy
• Instituto Clinico Humanitas — Milan, Italy

• Medtronic Bakken Research Center — Maastricht, Netherlands

• Clinic for Cardiac Surgery Karlsruhe — Karlsruhe, Baden-Wurttemberg, Germany
• Klinik für Herz- und Thoraxchirurgie, BG-Uniklinikum Bergmannsheil — Bochum, North Rhine-Westphalia, Germany
• Klinikum Augsburg — Augsburg, Germany
• Herz- und Gefäß-Klinik GmbH Bad Neustadt — Bad Neustadt an der Saale, Germany

• Washington University School of Medicine — St Louis, Missouri, United States

• Toronto General Hospital — Toronto, Ontario, Canada

• Minneapolis VA Health Care System — Minneapolis, Minnesota, United States

Not specified