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Kaplan-Meier survival curves by: A, Tumour size (p = 0.026); B, N status (p = < 0.0005); C, Clinical Stage (p = 0.007); D, Margins of resection (p = 0.001); E, Extracapsular spread (p = 0.005); F, Recurrence (p = < 0.0005); G, Treatment modality (p = 0.004).
