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Lee CK, Koh JH, Cha HS, Kim J, Huh W, Chung MP, Koh EM.Lee CK, et al. Among authors: cha hs.Scand J Rheumatol. 2000;29(5):288-94. doi: 10.1080/030097400447660.Scand J Rheumatol. 2000.PMID: 11093594
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Cha HS, Kim TJ, Kim JY, Lee MH, Jeon CH, Kim J, Bae EK, Ahn KS, Koh EM.Cha HS, et al.Scand J Rheumatol. 2004;33(3):179-84. doi: 10.1080/03009740310004757.Scand J Rheumatol. 2004.PMID: 15228189
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