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Van Horn LV, Ballew C, Liu K, Ruth K, McDonald A, Hilner JE, Burke GL, Savage PJ, Bragg C, Caan B, et al.Van Horn LV, et al. Among authors: liu k.Am J Epidemiol. 1991 Jan;133(1):9-23. doi: 10.1093/oxfordjournals.aje.a115807.Am J Epidemiol. 1991.PMID: 1983903
LeGrady D, Dyer AR, Shekelle RB, Stamler J, Liu K, Paul O, Lepper M, Shryock AM.LeGrady D, et al. Among authors: liu k.Am J Epidemiol. 1987 Nov;126(5):803-12. doi: 10.1093/oxfordjournals.aje.a114717.Am J Epidemiol. 1987.PMID: 3661528
Green D, Jarrett O, Ruth KJ, Folsom AR, Liu K.Green D, et al. Among authors: liu k.J Lab Clin Med. 1995 Mar;125(3):334-9.J Lab Clin Med. 1995.PMID: 7897300
Green D, Ruth KJ, Folsom AR, Liu K.Green D, et al. Among authors: liu k.Arterioscler Thromb. 1994 May;14(5):686-93. doi: 10.1161/01.atv.14.5.686.Arterioscler Thromb. 1994.PMID: 8172846