UKE Hamburg (Universitatsklinik Eppendorf), Hamburg, Germany
Asklepios Klinikum St Georg, Hamburg, Germany
Azienda Ospedali V. Emanuele Ferrarotto E S. Bambino, Catania, Italy
Toronto General Hospital, Toronto, Ontario, Canada
Stadtspital Triemli, Zurich, Switzerland
John Radcliffe Hospital, Oxford, United Kingdom
St. Marien-Hospital Bonn, Bonn, Germany
University Medicine Goettingen, Goettingen, Germany
Englewood Hospital and Medical Center, Englewood, New Jersey, United States
Lancaster General Hospital, Lancaster, Pennsylvania, United States
Premier Cardiology, Inc, Newport Beach, California, United States
Universitäre Herzzentrum, Hamburg, Hamburg, Germany
Inselspital Bern, Bern, Switzerland
Herzzentrum Göttingen Universitätsmedizin, Göttingen, Göttingen, Germany
Abbott Vascular International BVBA, Brussels, Belgium
Cardiology Associates of Mobile, Inc., Mobile, Alabama, United States
California Heart Medical Associates, Fresno, California, United States
Emory University Hospital, Atlanta, Georgia, United States
Scripps Memorial Hospital, La Jolla, California, United States
Chandler Regional Medical Center, Gilbert, Arizona, United States
Banner Heart Hospital, Mesa, Arizona, United States
King's College Hospital, London, United Kingdom