[1] Sungkyunkwan Univ, Samsung Hosp, Cardiovasc Image Ctr, Seoul, South Korea
[2] Seoul Natl Univ, Bundang Hospital, Ctr Cardiovasc, Bundang, Gyeonggi Do, South Korea
[3] KonKuk Univ Hosp, Ctr Cardiovasc, Seoul, South Korea
[4] Chungbuk Univ Hosp, Ctr Cardiovasc, Cheongju, Chungbuk, South Korea
[5] Korean Heart Failure Registry, Seoul, South Korea