text_1: 我们 将 接受 过 一种 治疗 , 未 使用 铂 类 化疗 的 间期 ( 无 铂 间期 ) ≥ 6 个 月 并且 研究者 确定 肿瘤 可切除 ( 切除 至 无 肉眼 可见 的 残留 病灶 ) 的 复发性 卵巢癌 患者 随机 分组 , 分别 接受 二次 肿瘤 细胞 减灭术 + 后续 铂 类 化疗 或 接受 单独 铂 类 化疗 .
  
text_2: we randomly assigned patients with recurrent ovarian cancer who had received one previous therapy , had an interval during which no platinum @-@ based chemotherapy was used ( platinum @-@ free interval ) of 6 months or more , and had investigator @-@ determined resectable disease ( to no macroscopic residual disease ) to undergo secondary surgical cytoreduction and then receive platinum @-@ based chemotherapy or to receive platinum @-@ based chemotherapy alone .
  