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Roche K, Paul N, Smuck B, Whitehead M, Zee B, Pater J, Hiatt MA, Walker H.Roche K, et al. Among authors: walker h.J Clin Oncol. 2002 Jan 15;20(2):545-56. doi: 10.1200/JCO.2002.20.2.545.J Clin Oncol. 2002.PMID: 11786585
Evans WK, Coyle D, Gafni A, Walker H; National Cancer Institute of Canada Clinical Trials Group--Working Group on Economic Analysis.Evans WK, et al. Among authors: walker h.Chronic Dis Can. 2003 Fall;24(4):102-7.Chronic Dis Can. 2003.PMID: 14733759