text_1: 纳武利 尤 单抗 + 伊匹 单抗 组和 化疗 组 的 中位 缓解 持续时间 分别 为 23.2 个 月 ( 95% CI , 15.2 ~ 32.2 ) 和 6.2 个 月 ( 95% CI , 5.6 ~ 7.4 ) .
  
text_2: the median duration of response was 23.2 months ( 95 % CI , 15.2 to 32.2 ) with nivolumab plus ipilimumab and 6.2 months ( 95 % CI , 5.6 to 7.4 ) with chemotherapy .
  