text_1: 各国 的 跨组 发生率 无 显著 差异 ( 跨组 患者 以及 手术 和 术后 治疗 的 详细信息 见表 S6 至 S10 ) .
  
text_2: the frequency of crossing over did not vary substantially according to country . ( details regarding the patients who crossed over and of surgical and postoperative care are provided in Tables S6 through S10 . )
  