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. 2009 Jan 6;100(2):298–304. doi: 10.1038/sj.bjc.6604861

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Copyright © 2009 Cancer Research UK

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Baseline serum EGF (A) and TGF-α (B) levels according to the best overall response. Bars indicate median values. P-value by Kruskal–Wallis test. Abbreviations: EGF, epidermal growth factor; TGF, transforming growth factor; PR, partial response; SD, stable disease; PD, progressive disease.