Arrhythmias, Cardiac

• Hot Springs, Arkansas, United States
• Little Rock, Arkansas, United States
• Fresno, California, United States
• Glendale, California, United States

• Mobile, Alabama, United States
• Phoenix, Arizona, United States
• Walnut Creek, California, United States
• Denver, Colorado, United States

• Mobile, Alabama, United States
• Phoenix, Arizona, United States
• Walnut Creek, California, United States
• Denver, Colorado, United States

• Div. of Gastroenterology and Hepatology, Medical University of Vienna — Vienna, Austria

Not specified

• New England Medical Center, Cardiac Arrhythmia Service — Boston, Massachusetts, United States

• Wilhelminenspital — Vienna, Austria
• Universitair Ziekenhuis Gent — Ghent, Belgium
• Interni Kardiologicka Klinika — Brno, Czechia
• Institute of Clinical and Experimental Medicine — Prague, Czechia

• Righospitalet, Copenhagen University Hospital — Copenhagen, Denmark