Persistant Atrial Fibrillation

• Grandview — Birmingham, Alabama, United States
• Banner University Med Ctr — Phoenix, Arizona, United States
• Arrhythmia Research Group — Jonesboro, Arkansas, United States
• UCSD — San Diego, California, United States

• Grandview Medical Center — Birmingham, Alabama, United States
• Mercy Gilbert Medical Center — Gilbert, Arizona, United States
• Banner University Medical Center — Phoenix, Arizona, United States
• Arrhythmia Research Group — Jonesboro, Arkansas, United States

• KBC Split — Split, Croatia
• St. Anne's University Hospital — Brno, Czechia
• Homolka — Prague, Czechia

Not specified

• University Medical Center Groningen — Groningen, Netherlands