Heart Block

• Heart Center Research, LLC. — Huntsville, Alabama, United States
• Mills-Peninsula Medical Center — Burlingame, California, United States
• University of California at San Diego (UCSD) Medical Center — San Diego, California, United States
• Yoel R. Vivas, MD — Delray Beach, Florida, United States

• Columbia University Medical Center — New York, United States

• Centro de Intervenciones Endovasculares y Cirugia Cardiovascular — Asunción, Paraguay

Not specified

• Henry Ford Health System — Detroit, Michigan, United States

• CHRU- Hôpital Nord — Amiens, France
• Clinique Cardiologique Aressy — Aressy, France
• Clinique du Lac et d'Argonay — Argonay, France
• CH d'Arles — Arles, France

• Vanderbilt University — Nashville, Tennessee, United States
• University of Calgary — Calgary, Alberta, Canada
• Royal Alexandra Hospital — Edmonton, Alberta, Canada
• Victoria Heart Institute — Victoria, British Columbia, Canada

• Krankenhaus der barmherzigen Schwestern — Ried im Innkreis, Austria

• Kreiskrankenhaus — Viechtach, Germany

• Children's Hospital Boston — Boston, Massachusetts, United States