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Table 1 TN classification

From: Preoperative concurrent chemotherapy with S-1 and radiotherapy for locally advanced squamous cell carcinoma of the oral cavity: Phase I trial

  T2 T3 T4a Total
N0 0 7 2 9
N1 5 3 2 10
N2b 2 4 3 9
N2c 0 0 2 2
Total 7 14 9 30