Authors: Jae Min Lee; Bora Keum; In Kyung Yoo; Seung Han Kim; Hyuk Soon Choi; Eun Sun Kim; Yeon Seok Seo; Yoon Tae Jeen; Hoon Jai Chun; Hong Sik Lee; Soon Ho Um; Chang Duck Kim; Myung Gyu Kim; Sang Kyung Jo Journal: Medicine (Baltimore) Date: 2016-09 Impact factor: 1.889