Figure 1. No differences in overall survival (OS) between synchronous and metachronous BiBC regardless different cut off point by Kaplan-Meier method and log-rank test.

(A) cut off point = 1 month, (B) cut off point = 3 month, (C) cut off point = 6 month, (D) cut off point = 12 month, (E) cut off point = 24 month.