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Chang JW, Lee H, Kim E, Lee Y, Chung SS, Kim JH.Chang JW, et al.Neurosurgery. 2000 Oct;47(4):931-8; discussion 938-9. doi: 10.1097/00006123-200010000-00026.Neurosurgery. 2000.PMID: 11014433
Park YG, Chang JW, Kim EY, Chung SS.Park YG, et al. Among authors: chang jw.Yonsei Med J. 1996 Jun;37(3):165-73. doi: 10.3349/ymj.1996.37.3.165.Yonsei Med J. 1996.PMID: 8826781Free article.