Bradycardia

• Medizinische Universitat Graz — Graz, Austria
• AKh - Allgemeines Krankenhaus der Stadt Linz GmbH — Linz, Austria
• Ziekenhaus Oost Limburg — Genk, Belgium
• Grand Hopital De Charleroi — Gilly, Belgium

• Cleveland Clinic — Cleveland, Ohio, United States

• Ajou universitiy school of medicine — Suwon, Gyeong-gi Do, South Korea

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

• The Essex Cardiothoracic Centre — Basildon, Essex, United Kingdom

Not specified

Not specified

• Fuwai Hospital Chinese Academy of Medical Sciences — Beijing, Beijing Municipality, China
• Beijing Anzhen Hospital, Capital Medical University — Beijing, Beijing Municipality, China
• Jiangsu Province Hospital — Nanjing, Jiangsu, China
• Ruijin Hospital Affliated to Shanghai Jiao Tong University School of Medicine — Shanghai, Shanghai Municipality, China

• Mercy Gilbert Medical Center — Gilbert, Arizona, United States
• Cardiovascular Consultants, LTD — Glendale, Arizona, United States
• Pima Heart Physicians, PC — Tucson, Arizona, United States
• Sharp Grossmont Hospital — La Mesa, California, United States

• Assiut University hospital — Asyut, Asyut Governorate, Egypt