Yokohama Dai-ichi Hospital, Yokohama, Kanagawa, Japan
Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
Kishiwada Tokushukai Hospital, Kishiwada, Osaka, Japan
Universitaetsklinikum Dusseldorf, Dusseldorf, Germany
St. Georges Hospital, London, United Kingdom
Grandview Medical Center, Birmingham, Alabama, United States
Banner University Medical Center Phoenix, Phoenix, Arizona, United States
Mills Peninsula Health Services, Burlingame, California, United States
Tucson Medical Center Healthcare, Tucson, Arizona, United States
Arrhythmia Research Group, Jonesboro, Arkansas, United States
Los Robles Hospital & Medical Center, Thousand Oaks, California, United States
Brigham and Women's Hospital, Boston, Massachusetts, United States
University of Alabama at Birmingham, Birmingham, Alabama, United States
Carondelet Medical Group St. Mary's Hospital, Tucson, Arizona, United States