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Receiver-operator curves for determining the cut-off score for evaluating insulin-like growth factor binding protein-3 expression. The sensitivity and specificity for each of the following outcomes were plotted: (A) survival time, (B) clinical stage, (C) metastasis stage, (D) liver cirrhosis, (E) node stage, (F) tumor size, (G) tumor multiplicity and (H) α-fetoprotein.
