Left Bundle-Branch Block

• Fuwai Hospital, Chinese Academy of Medical Sciences — Beijing, Beijing Municipality, China
• Fujian Medical University Union Hospital — Fuzhou, Fujian, China
• The First Affiliated Hospital with Nanjing Medical University — Nanjing, Jiangsu, China
• The First Affiliated Hospital of Dalian Medical University — Dalian, Liaoning, China

• Duke University Medical Center — Durham, North Carolina, United States
• Inova Health System — Falls Church, Virginia, United States

• Hospital General Universitario de Alicante Doctor Balmis — Alicante, Spain
• Hospital Universitario de Bellvitge — L'Hospitalet de Llobregat, Barcelona, Spain
• Hospital Universitario Virgen de las Nieves — Granada, Spain
• Hospital Universitario San Cecilio — Granada, Spain

• CF UMC — Astana, Kazakhstan

• Faculté de médecine montpellier — Montpellier, France

• Rigshospitalet — Copenhagen, Capital Region, Denmark

• Tampa General Hospital — Tampa, Florida, United States

Not specified

• Gleneagles Jerudong Park Medical Centre — Bandar Seri Begawan, Brunei
• Ruijin Hospital Shanghai Jiao Tong University School of Medicine — Shanghai, China
• Grantham Hospital — Hong Kong
• Queen Elizabeth Hospital — Hong Kong

• Fundação Hospital do Coração Francisca Mendes — Manaus, Amazonas, Brazil
• Hospital Universitário Cassiano Antônio de Moraes — Vitória, Espírito Santo, Brazil
• Hospital Ana Nery — Salvador, Estado de Bahia, Brazil
• Hospital Geral Universitário de Cuiabá — Cuiabá, Mato Grosso, Brazil