Cardiovascular Abnormalities

• Zentrum fuer Kinderheilkunde und Jugendmedizin — Freiburg im Breisgau, Baden-Wurttemberg, Germany
• Kinderherzzentrum des Klinikum Stuttgart — Stuttgart, Baden-Wurttemberg, Germany
• Universitätsklinikum Tuebingen — Tübingen, Baden-Wurttemberg, Germany
• Herzzentrum Hamburg, UKE — Hamburg, Free and Hanseatic City of Hamburg, Germany

• Zekai Tahir Burak Maternity Teaching Hospital — Ankara, Turkey (Türkiye)

• Medical College of Georgia — Augusta, Georgia, United States
• UMass Memorial Medical Center — Worcester, Massachusetts, United States
• Northport VAMC — Northport, New York, United States

• Shaare Zedek Medical Center — Jerusalem, Israel

• Site Ref # / Investigator 22699 — Ivanovo, Russia
• Site Ref # / Investigator 22694 — Kazan', Russia
• Site Ref # / Investigator 24022 — Moscow, Russia
• Site Ref # / Investigator 15744 — Moscow, Russia

Not specified

• Cardio-Vascular Centre, Sankt Kathrinen — Frankfurt, Germany

• USIC CHU de Caen — Caen, France

• Faculty Hospital Olomouc, Children's Clinic, Endocrinology Outpatient Department, I.P.Pavlova str. 6, — Olomouc, Czechia
• Faculty Hospital Kralovske Vinohrady, Children's Clinic, Vinohradska str. 159 — Prague, Czechia
• Masaryk Hospital Usti nad Labem, Children's Clinic, Building D2, Endocrinology Outpatient Department, Socialni pece 12a — Ústí nad Labem, Czechia
• Centre d'Endocrinologie Pediatrique, 25 rue Boudet — Bordeaux, France

• BC Women's Hospital — Vancouver, British Columbia, Canada