tokens: In this study , the proliferative activity of 129 primary breast cancers was investigated , and the results were related to prognosis .
folded_tokens: in this study , the proliferative activity of 129 primary breast cancers was investigated , and the results were related to prognosis .
labels: O O O O O O O O O B-other_name I-other_name I-other_name O O O O O O O O O O O