The Cleveland Clinic Foundation, Cleveland, Ohio, United States
Deborah Heart, Browns Mills, New Jersey, United States
Maine Medical Center, Portland, Maine, United States
Brigham and Women's Hospital, Boston, Massachusetts, United States
University of Colorado Hospital, Aurora, Colorado, United States
Hattiesburg Clinic, P.A./Southern Heart Center, Hattiesburg, Mississippi, United States
Kansas University Medical Center, Kansas City, Kansas, United States
Loyola University Medical Center, Maywood, Illinois, United States
Krannert Institute of Cardiology, Indianapolis, Indiana, United States
Medizinische Fakultät der Universität Magdeburg, Magdeburg, Saxony-Anhalt, Germany
Herz- und Gefäßklinik Bad Neustadt, Bad Neustadt, Bavaria, Germany
Klinikum der Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Hesse, Germany
Fu Wai Hospital, Beijing, China
York Hospital, York, Pennsylvania, United States
North Mississippi Medical Center, Tupelo, Mississippi, United States
Deborah Heart and Lung Center, Browns Mills, New Jersey, United States
Johns Hopkins Hospital, Baltimore, Maryland, United States
Allegheny General Hospital, Pittsburgh, Pennsylvania, United States
Riverside Methodist Hospital, Columbus, Ohio, United States
St Michael's Hospital, Toronto, Ontario, Canada
Hopital de Rangueil - Chu, Toulouse, France