 | Argentina | Fundacion Favaloro | x | x |  |
 | Australiaa | St Vincent | x | x |  |
 | | Prince Charles Hospital | x | x |  |
 | | Royal Children’s Hospital | x | x |  |
 | | Alfred Hospital | x | x |  |
 | | Royal Perth Hospital | x | x |  |
 | Austriab | Universitätsklinik für Chirurgie, Wien | x | x |  |
 | | Universitätsklinik für Chirurgie, Innsbruck | x | x |  |
 | | Universitätsklinik für Chirurgie, Graz | x | x |  |
 | Belgiumb | Hôpital Erasme, Bruxelles | x | x |  |
 | | Universitair Ziekenhuis Gasthuisberg, Leuven | x | x |  |
 | | Universitair Ziekenhuis Antwerpen, Edegem | x | x |  |
 | | Onze Lieve Vrouw Ziekenhuis, Aalst | x | x |  |
 | | Universitair Ziekenhuis, Gent | x | x |  |
 | | Université Catholique de Louvain, Cliniques Universitaires St Luc, Bruxelles | x | x |  |
 | | Centre Hospitalier Universitaire, Liège | x | x |  |
 | Canada | Royal Victoria Hospital | x | x |  |
 | | Montreal Heart Institute | x | x |  |
 | | Toronto General Hospital | x | x |  |
 | | Hospital Notre-Dame | x | x |  |
 | | Quebec Heart Institute-Laval Hospital | x | x |  |
 | | Ottawa Heart Institute | x | |  |
 | | University of Alberta Hospitals/Walter C. Mackenzie Health Sciences | x | x |  |
 | | St Paul’s Hospital | x | x |  |
 | | Vancouver General Hospital | x | x |  |
 | | Hospital for Sick Children | x | x |  |
 | Chile | Hospital DIPRECA | x | |  |
 | | Clinica Las Condes | x | x |  |
 | Denmarkc | Skejby University Hospital | x | x |  |
 | | Rigshospitalet, National University Hospital | x | x |  |
 | Finlandc | Helsinki University Central Hospital | x | x |  |
 | | Children’s Hospital, University of Helsinki | x | x |  |
 | France | Hopital Cardiolgique (Lille) | | x |  |
 | | Hopices Civils Hopital Universitaires de Strasbourg | x | |  |
 | Germanyb | Universitätsklinikum des Saarlandes, Homburg-Saar | x | |  |
 | | Herzzentrum Dresden gmbh, Universitätsklinikum | x | x |  |
 | | Deutsches Herzzentrum Berlin | x | x |  |
 | | Universitäts-Krankenhaus Eppendorf, Klinik für Herz-und Gefässchirurgie, Hamburg | x | x |  |
 | | Universitätsklinikum Köln | x | x |  |
 | | Universitätsklinikum Leipzig, Klinik für Abdominal-, Transplantations-und Gefässchirurgie, Leipzig | x | x |  |
 | | Klinikum der Universität, Regensburg | x | x |  |
 | | Herz- & Diabeteszentrum Nordrhein-Westfalen, Bad Oeynhausen | x | x |  |
 | | Universitätsklinikum Freiburg | x | x |  |
 | | Universitätsklinikum Essen, Klinik für Thorax- und Kardiovaskuläre Chirurgie | x | x |  |
 | | Klinikum der Johannes-Gutenberg-Universität, Mainz | x | x |  |
 | | Heinrich-Heine Universität Düsseldorf | x | |  |
 | | Westfälischen Wilhelms-Universität, Münster | x | x |  |
 | | Klinikum Grosshadern der Ludwig-Maximilians Universität, München | x | x |  |
 | | Klinikum der Ruprecht-Karls-Universität, Chirurgischen Universitätsklinik, Abteilung für Herzchirurgie, Heidelberg | x | x |  |
 | | Medizinischen Hochschule, Hannover | x | x |  |
 | | Klinikum der Georg-August-Universität, Göttingen | x | x |  |
 | | Universitätsklinikum der Rheinisch- | x | x |  |
 | | Westfälischen TH, Aachen | | |  |
 | | Klinikum Fulda, Thorax-, Herz- und Gefässchirurgie | x | x |  |
 | | Universitätsklinikum der Johann Wolfgang Goethe-Universität, Thorax- Herz- und Thorakale Gefässchirurgie, Frankfurt am Main | x | x |  |
 | | Klinikum der Justus-Liebig Universität, Gieβen | x | x |  |
 | | Universitätsklinikum Kiel, Klinik für Herz- und Gefässchirurgie | x | x |  |
 | | Klinikum der Friedrich-Schiller-Universität, Jena | x | x |  |
 | | Universitätsklinikum Erlangen | x | x |  |
 | | Deutsches Herzzentrum München | x | x |  |
 | Greece | Onassis Cardiac Surgery Center | x | x |  |
 | Irelandd | Mater Hospital | x | x |  |
 | Israel | Sheba Medical Center | x | x |  |
 | Italy | Policlinico S. Orsola-Universita degli Studi | x | x |  |
 | | Ospedali Riuniti | x | |  |
 | | Universita Pavia | x | x |  |
 | | Niguarda CA Granda Hospital | | |  |
 | Japan | Tohoku University, IDAC Hospital | x | |  |
 | | Osaka University Hospital | x | |  |
 | | National Cardiovascular Center | x | x |  |
 | The Netherlandsb | Universitair Medisch Centrum Utrecht | x | x |  |
 | | Erasmus MC, Universitair Medisch Centrum, Rotterdam | x | x |  |
 | | Groningen Universitair Medisch Centrum | x | x |  |
 | New Zealanda | Green Lane Hospital | x | x |  |
 | Norwayc | Rikshospitalet-National Hospital of Norway | x | x |  |
 | Sloveniab | University Medical Center, Ljubljana | x | x |  |
 | Spain | Hospital Clinic-Barcelona | x | x |  |
 | | Hospital Central DE Asturias, Oviedo | x | x |  |
 | Swedenc | University Hospital of Lund | x | x |  |
 | | Sahlgrenska University Hospital | x | x |  |
 | | University Hospital Zurich | | x |  |
 | | University Clinic for Cardio Thoracic Surgery, Basel | | x |  |
 | Taiwan | China Medical College Hospital | | x |  |
 | United Kingdomd | Great Ormand Street Hospital for Children | x | x |  |
 | | University of Glasgow/Glasgow Royal Infirmary | x | X |  |
 | | Northern General Hospital | x | |  |
 | | Freeman Hospital | x | x |  |
 | | Harefield Hospital | x | x |  |
 | | Wythenshawe Hospital | x | x |  |
 | | Queen Elizabeth Hospital | x | x |  |
 | | Papworth Hospital | x | x |  |
 | United Statese | University of Alabama Hospital | x | x |  |
 | | Baptist Medical Center, Little Rock | x | x |  |
 | | Arkansas Children’s Hospital | x | x |  |
 | | University Hospital of Arkansas | x | x |  |
 | | University Medical Center, University of Arizona | x | x |  |
 | | Children’s Hospital Los Angeles | x | x |  |
 | | Cedars Sinai Medical Center | x | x |  |
 | | Loma Linda University Medical Center | x | x |  |
 | | California Pacific Medical Center | x | x |  |
 | | UCSD Medical Center | x | x |  |
 | | University of California San Francisco Medical Center | x | x |  |
 | | Sutter Memorial Hospital | x | x |  |
 | | Sharp Memorial Hospital | x | x |  |
 | | Stanford University Medical Center | x | x |  |
 | | St Vincent Medical Center | x | x |  |
 | | UCLA Medical Center | x | x |  |
 | | USC University Hospital | x | x |  |
 | | Children’s Hospital, Denver | x | x |  |
 | | University Hospital, Denver | x | x |  |
 | | Hartford Hospital | x | x |  |
 | | Yale New Haven Hospital | x | x |  |
 | | Children’s National Medical Center | | x |  |
 | | Washington Hospital Center | x | x |  |
 | | All Children’s Hospital | x | x |  |
 | | Jackson Memorial Hospital | x | x |  |
 | | St Luke’s Hospital, Jacksonville | | x |  |
 | | Tampa General Hospital | x | x |  |
 | | Tallahassee Memorial Hospital | x | x |  |
 | | Shands Hospital at University of Florida | x | x |  |
 | | Children’s Healthcare of Atlanta | x | x |  |
 | | Emory University Hospital | x | x |  |
 | | St Joseph Hospital of Atlanta | x | x |  |
 | | St Francis Medical Center, Honolulu | x | x |  |
 | | University of lowa Hospital and Clinics | x | x |  |
 | | Children’s Memorial Hospital | x | x |  |
 | | Loyola University Medical Center | x | x |  |
 | | OSF St Francis Medical Center | x | x |  |
 | | St. John’s Hospital | x | |  |
 | | University of Chicago Medical Center | x | x |  |
 | | University of Illinois Hospital | x | x |  |
 | | Clarian Health-Methodist/IU/Riley | x | x |  |
 | | Lutheran Hospital of Ft Wayne | x | x |  |
 | | St Vincent Hospital and Health Care Center | x | x |  |
 | | Via Christi Regional Medical Center | x | x |  |
 | | Jewish Hospital | x | x |  |
 | | Kosair Children’s Hospital | | x |  |
 | | University of Kentucky Medical Center | x | x |  |
 | | Ochsner Foundation Hospital | x | x |  |
 | | Tulane University Medical Center | x | x |  |
 | | Willis Knighton Medical Center | x | x |  |
 | | Children’s Hospital, Boston | x | x |  |
 | | Massachusetts General Hospital | x | x |  |
 | | New England Medical Center | x | x |  |
 | | Brigham and Women’s Hospital | x | x |  |
 | | UMass Memorial Medical Center | x | |  |
 | | Johns Hopkins Hospital | x | x |  |
 | | University of Maryland Medical System | x | x |  |
 | | Children’s Hospital of Michigan | x | x |  |
 | | Henry Ford Hospital | x | x |  |
 | | University of Michigan Medical Center | x | x |  |
 | | Abbott Northwestern Hospital | x | x |  |
 | | St Mary’s Hospital (Mayo Clinic) | x | x |  |
 | | Fairview University Medical Center | x | x |  |
 | | Barnes-Jewish Hospital | x | x |  |
 | | Cardinal Glennon Children’s Hospital | x | x |  |
 | | St Louis Children’s Hospital | x | x |  |
 | | St Luke’s Hospital of Kansas City | x | x |  |
 | | St Louis University Hospital | x | x |  |
 | | University of Missouri Hospital and Clinic | x | x |  |
 | | University of Mississippi Medical Center | x | x |  |
 | | North Carolina Baptist Hospital | x | x |  |
 | | Carolinas Medical Center | x | x |  |
 | | Duke University Medical Center | x | x |  |
 | | University of North Carolina Hospitals | x | x |  |
 | | Bryan LGH Medical Center East | x | x |  |
 | | Newark Beth Israel Medical Center | x | x |  |
 | | Robert Wood Johnson Univ. Hosp | x | x |  |
 | | Presbyterian Hospital, Albuquerque | x | x |  |
 | | Albany Medical Center Hospital | x | x |  |
 | | Presbyterian Hospital, New York City | x | x |  |
 | | Strong Memorial Hospital | x | x |  |
 | | Montefiore Medical Center | x | x |  |
 | | Mt Sinai Medical Center | x | x |  |
 | | New York University Medical Center | x | |  |
 | | Westchester County Medical Center | x | x |  |
 | | Cleveland Clinic Foundation | x | x |  |
 | | Children’s Hospital Dayton | | x |  |
 | | Children’s Hospital Medical Center, Cincinnati | x | x |  |
 | | Medical College Hospital, Toledo | x | x |  |
 | | Ohio State University Hospital | x | x |  |
 | | University of Cincinnati Medical Center | x | x |  |
 | | University Hospital of Cleveland | x | x |  |
 | | Integris Baptist Medical Center | x | x |  |
 | | St Francis Hospital, Tulsa | x | x |  |
 | | Providence Portland Medical Center | x | x |  |
 | | Oregon Health Sciences University Hospital | x | x |  |
 | | Allegheny General Hospital | x | x |  |
 | | Children’s Hospital of Pittsburgh | x | x |  |
 | | Children’s Hospital of Philadelphia | x | x |  |
 | | Penn State Milton S. Hershey Medical Center | x | x |  |
 | | Hahnemann University Hospital Tenet | x | x |  |
 | | University of Pittsburgh Medical Center | x | x |  |
 | | Temple University Hospital | x | x |  |
 | | Hospital of the University of Pennsylvania | x | x |  |
 | | Cardiovascular Center of PR | x | x |  |
 | | Medical University of South Carolina | x | x |  |
 | | Baptist Memorial Hosp, Memphis | x | x |  |
 | | St Thomas Hospital | x | x |  |
 | | Vanderbilt University Medical Center | x | x |  |
 | | Brooke Army Medical Center | x | |  |
 | | University Hospital, San Antonio | x | x |  |
 | | Children’s Medical Center of Dallas | x | x |  |
 | | Seton Medical Center | x | x |  |
 | | Columbia Hospital at Medical City Dallas | x | x |  |
 | | St Luke’s Episcopal Hospital | x | x |  |
 | | Methodist Specialty & Transplant Hospital | x | x |  |
 | | University of Texas Medical Branch | x | x |  |
 | | Methodist Hospital, Houston | x | x |  |
 | | Christus Santa Rosa Medical Center | x | x |  |
 | | St Paul University Hospital | x | x |  |
 | | Texas Children’s Hospital Dallas | | x |  |
 | | Baylor University Medical Center | x | x |  |
 | | LDS Hospital | x | x |  |
 | | University of Utah Medical Center | x | x |  |
 | | Primary Children’s Medical Center | x | x |  |
 | | Inova Fairfax Hospital | x | x |  |
 | | Henrico Doctors Hospital | x | x |  |
 | | MCV Hospitals | x | x |  |
 | | McGuire VA Medical Center | x | x |  |
 | | Sentara Norfolk General Hospital | x | x |  |
 | | University of Virginia HSC | x | x |  |
 | | Children’s Hospital Medical Center, Seattle | x | x |  |
 | | Sacred Heart Medical Center | x | x |  |
 | | University of Washington Medical Center | x | x |  |
 | | Children’s Hospital of Wisconsin | x | x |  |
 | | Froedtert Memorial Lutheran Hospital | x | x |  |
 | | St Luke’s Medical Center | x | x |  |
 | | University of Wisconsin Hospital and Clinics | x | x |  |
| | |