A Study to Evaluate Effectiveness and Safety of Edoxaban in Patients 80 Years of Age or Older With Nonvalvular Atrial Fibrillation

National Health Insurance Service Ilsan Hospital, Goyang

Seoul National University Bundang Hospital, Seongnam

Korea University Ansan Hospital, Ansan

Catholic University of Korea St. Vincent's Hospital, Suwon

Gachon University Gil Medical Center, Incheon

Kangwon National University Hospital, Chuncheon

Wonju Severance Christian Hospital, Wŏnju

Dankook University Hospital, Cheonan

Soonchunhyang University Hospital, Cheonan

Catholic University of Korea Daejeon St. Mary's Hospital, Daejeon

Chungnam University Hospital, Daejeon

Keimyung University Dongsan Medical Center, Daegu

Ulsan University Hospital, Ulsan

Dong-A University Hospital, Busan

Pusan National University Hospital, Busan

Samsung Changwon Center, Changwon

Gyeongsang National University Hospital, Jinju

Wonkwang University Hospital, Iksan

Chosun University Hospital, Gwangju

Chonnam Natinal University Hospital, Gwangju

Korea University Anam Hospital, Seoul

Seoul National University Hospital, Seoul

Kangbuk Samsung Hospital, Seoul

Severance Hospital, Seoul

KyungHee University Hospital at GangDong, Seoul

Korea Veterans Health Medical Center, Seoul

Asan Medical Center, Seoul

Gangnam Severance Hospital, Seoul

Samsung Medical Center, Seoul

Catholic University of Korea Seoul St. Mary's Hospital, Seoul

Chung-Ang University Hosptial, Seoul

Ewha Womans University Seoul Hospital, Seoul

Korea University Guro Hospital, Seoul