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Hong HJ, Kim WS, Koh YW, Lee SY, Shin YS, Koo YC, Park YA, Choi EC.Hong HJ, et al. Among authors: shin ys.Yonsei Med J. 2011 Jul;52(4):643-54. doi: 10.3349/ymj.2011.52.4.643.Yonsei Med J. 2011.PMID: 21623608Free PMC article.
Shin YS, Hong HJ, Koh YW, Chung WY, Lee HY, Hong JM, Hwang CS, Chang JW, Choi EC.Shin YS, et al.Yonsei Med J. 2012 Jan;53(1):193-7. doi: 10.3349/ymj.2012.53.1.193.Yonsei Med J. 2012.PMID: 22187252Free PMC article.