Miulli Hospital, Acquaviva Delle Fonti, Bari/Strada, Italy
Na Homolce Hospital, Prague, Czech Republic
OLV Hospital, Aalst, Belgium
Charles University Hospital, Prague, Czech Republic
Na Homolce Hospital, Prague, Czech Republic
Hospital Universitari Clinic de Barcelona, Barcelona, Spain
MetroHealth Medical Center, Cleveland, Ohio, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Kansas Hospitals, Kansas City, Kansas, United States
University of Chicago, Chicago, Illinois, United States
Valley Hospital, Ridgewood, New Jersey, United States
University of Pennsylvania Health System, Philadelphia, Pennsylvania, United States
Na Homolce Hospital, Prague, Czech Republic
Peninsula Heart Centre, Frankston, Victoria, Australia
Onze-Lieve-Vrouwziekenhuis Aalst, Aalst, Belgium
Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States
Scott & White Memorial Hospital, Temple, Texas, United States
Lankenau Institute for Medical Research, Wynnewood, Pennsylvania, United States
Royal Bournemouth Hospital, Bournemouth, United Kingdom
Glenfield Hospital, Leicester, Leicester, United Kingdom
University of Ottawa Heart Institute, Ottawa, Ontario, Canada
Loyola University Chicago, Maywood, Illinois, United States
Johns Hopkins Hospital, Baltimore, Maryland, United States
Abbott Northwestern Hospital, Minneapolis, Minnesota, United States
Texas Heart Institute at St. Luke's Episcopal Hospital, Houston, Texas, United States
Arizona Heart Hospital, Phoenix, Arizona, United States
Alaska Heart Institute, LLC, Anchorage, Alaska, United States