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Kwon JW, Hong SH, Choi SH, Yoon YC, Lee SH.Kwon JW, et al. Among authors: choi sh.AJR Am J Roentgenol. 2011 Nov;197(5):W919-23. doi: 10.2214/AJR.11.6786.AJR Am J Roentgenol. 2011.PMID: 22021542
Kwon JW, Chung HW, Cho EY, Hong SH, Choi SH, Yoon YC, Yi SK.Kwon JW, et al. Among authors: choi sh.AJR Am J Roentgenol. 2007 Jul;189(1):246-50. doi: 10.2214/AJR.06.1472.AJR Am J Roentgenol. 2007.PMID: 17579178Review.