Kim, Sung Eun; Kim, Chan Woong; Lee, Sang Jin; Oh, Je Hyeok; Lee, Dong Hoon; Lim, Tae Ho; Choi, Hyuk Joong; Chung, Hyun Soo; Ryu, Ji Yeong; Jang, Hye Young, et al.
ArticleIssue Date2015CitationBMJ OPEN, v.5, no.7, pp.1 - 9PublisherBMJ PUBLISHING GROUP