METHODS	BC subtypes were defined as triple negative ( TN ; n = 310 ) , human epidermal growth factor receptor 2 ( HER2 ) positive ( n = 369 ) , and hormone receptor positive with high ( luminal B-like [ LB-like ] ; n = 763 ) or low ( luminal A-like [ LA-like ] ; n = 509 ) proliferative activity by Ki-67 labeling index .\