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ALC, Absolute lymphocyte count; DCF, Docetaxel + Cisplatin + 5-fluorouracil; CF, Cisplatin + 5-fluorouracil; β, regression coefficient; CI, confidence interval; V5, volume receiving 5 Gy; V10, volume receiving 10 Gy; V20, volume receiving 20 Gy; V30, volume receiving 30 Gy.
