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Kim KW, Choi BI, Park SH, Kim AY, Koh YH, Lee HJ, Han JK.Kim KW, et al. Among authors: choi bi.Ultrasound Med Biol. 2004 Jun;30(6):725-33. doi: 10.1016/j.ultrasmedbio.2004.03.006.Ultrasound Med Biol. 2004.PMID: 15219952
Kim SH, Lee JM, Lee KH, Kim YJ, An SK, Han CJ, Han JK, Choi BI.Kim SH, et al. Among authors: choi bi.Eur Radiol. 2004 Sep;14(9):1657-64. doi: 10.1007/s00330-004-2376-3. Epub 2004 Jul 17.Eur Radiol. 2004.PMID: 15258822
Kim NR, Kim SH, Lee JM, Lee KH, Kim YJ, An SK, Jung AY, Han JK, Choi BI.Kim NR, et al. Among authors: choi bi.J Ultrasound Med. 2004 Oct;23(10):1283-91. doi: 10.7863/jum.2004.23.10.1283.J Ultrasound Med. 2004.PMID: 15448317