Tachycardia

• University Hospital Coventry and Warwickshire NHS Trust — Coventry, West Midlands, United Kingdom
• University Hospitals Sussex NHS Foundation Trust — Brighton, United Kingdom

• Istanbul University-Cerrahpasa Cardiology Institute — Istanbul, Turkey (Türkiye)

• Catholic University of Sacred Heart — Rome, Italy

• Vanderbilt University Medical Center — Nashville, Tennessee, United States

• Haseki Training and Research Hospital — Istanbul, Fatih, Turkey (Türkiye)

• Heart Institute of Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo — São Paulo, Brazil

• Johns Hopkins — Baltimore, Maryland, United States

Not specified

• Azienda USL Toscana Sud Est — Arezzo, AR, Italy
• Azienda USL Toscana Sud Est- U.O.C. Cardiologia, Ospedale Misericordia - Grosseto — Grosseto, GR, Italy
• Azienda USL Toscana Nord Ovest- U.O.C. Cardiologia, Ospedali Riuniti - Livorno — Livorno, LI, Italy
• Azienda USL Toscana Nord Ovest - U.O.C. Cardiologia, Ospedale Versilia — Camaiore, LU, Italy

• Central Finland Central Hospital — Jyväskylä, Central Finland, Finland
• Kajaani Central Hospital — Kajaani, Kainuu, Finland
• Hämeenlinna Central Hospital — Hämeenlinna, Kanta-Häme, Finland
• Kokkola Central Hopsital — Kokkola, Keski-Pohjanmaa, Finland