Authors: Hong Won Shin; Hyuck Jun Yoon; Sang Woong Choi; Han Jun Bae; Ji Hyun Sohn; Ho Myung Lee; Hyun Ok Cho; Yun Kyeong Cho; Hyoung Seob Park; Hyungseop Kim; Chang Wook Nam; Seung Ho Hur; Yoon Nyun Kim; Kwon Bae Kim Journal: Korean Circ J Date: 2012-09-27 Impact factor: 3.243