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'adjuvant': [72, 289], 'therapy': [73, 290], 'cancer,': [76], 'we': [77], 'studied': [78], 'association': [80], 'number': [83, 137, 177, 240, 258, 275, 307], 'nodes': [86, 140, 151, 180, 206, 243, 261, 278, 310], 'overall': [88, 105, 124, 167, 213], 'survival': [89, 93, 106, 125, 171, 214, 221], 'relapse': [91, 163, 169, 219], 'free': [92, 164, 170, 220], 'by': [94], 'means': [95], 'univariate': [97], 'Cox': [99], 'regression': [100], 'analysis.': [101], 'Results': [102], 'The': [103, 157, 250], 'worst': [104], 'related': [108, 127, 173, 237], 'to': [109, 128, 135, 174, 238, 314], 'ages': [110], '>': [111], '65': [112], '(risk': [113], 'ratio': [114], '[RR]': [115], '=': [116, 121, 132, 144, 149, 155, 183, 187, 216, 223, 245, 266], '1.30),': [117], 'higher': [118, 136, 176], 'grading': [119], '(RR': [120, 131], '1.96).': [122], 'Better': [123], 'female': [129], 'gender': [130], '0.80)': [133], '(8–12': [141], 'nodes,': [142, 147], 'RR': [143, 148, 154], '0.46,': [145], '13–17': [146], 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