Cardiac Conduction System Disease

• Royal Infirmary of Edinburgh — Edinburgh, Midlothian, United Kingdom
• Chesterfield — Chesterfield, United Kingdom
• Royal Devon and Exeter Hospital — Exeter, United Kingdom
• Leicester Royal Infirmary — Leicester, United Kingdom

• New York University School of Medicine — New York, United States

• University of California, San Diego Medical Center — San Diego, California, United States
• Veterans Affairs San Diego Medical Center — San Diego, California, United States

• Erciyes university Yilmaz- mehmet öztaşkın heart hospital — Kayseri, Turkey (Türkiye)

• University of Minnesota - Twin Cities — Minneapolis, Minnesota, United States

• Germans Trias i Pujol University Hospital — Badalona, Barcelona, Spain

Not specified

• Brigahm and Women's Hospital — Boston, Massachusetts, United States

• University of Pacific — Stockton, California, United States

• Singapore General Hospital — Singapore