Life-table analysis ( Mantel-Cox ) was used to assess the probability of disease-free survival ( DFS ) and overall survival ( OS ) .
life-table analysis ( mantel-cox ) was used to assess the probability of disease-free survival ( dfs ) and overall survival ( os ) .
O O O O O O O O O O O O B-other_name I-other_name O O O O O O O O O O