Blackmun then cited medical evidence suggesting that in the second trimester, an abortion posed a greater threat to a woman's health than one performed in the first trimester.

然后布莱克门引用医学证据证明，在第二个三个月孕妇堕胎对健康的威胁远大于前三个月。

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To compare surgical and medical methods of inducing abortion in the second trimester of pregnancy with regard to efficacy, side effects, adverse events, and acceptability.

主要在比较在第二孕期人工引产的手术或药物方法，包括效果、副作用、不良反应和接受程度。

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