Cardiac Conduction System Disease

• Ost-Alb Klinikum — Aalen, Germany
• SLK-Kliniken Heilbronn GmbH Klinikum am Plattenwald — Bad Friedrichshall, Germany
• Segeberger Kliniken GmbH — Bad Segeberg, Germany
• Städtisches Klinikum Brandenburg — Brandenburg, Germany

• Queen Mary Hospital, The University Hospital of Hong Kong — Hong Kong

• Herzzentrum Leipzig GmbH — Leipzig, Germany

• UniversitätsSpital Zürich — Zurich, Switzerland

• The Cleveland Clinic Foundation — Cleveland, Ohio, United States

• Northeast Ohio Cardiovascular Specialists — Akron, Ohio, United States
• The Ohio State University — Columbus, Ohio, United States

Not specified

• Guang Dong General Hospital — Guangzhou, Guangdong, China

Not specified

• Alaska Heart Institute — Anchorage, Alaska, United States
• Arizona Arrhythmia Research — Scottsdale, Arizona, United States
• Arkansas Heart Hospital — Little Rock, Arkansas, United States
• St. Jude Hospital — Fullerton, California, United States