Further, as far back as 2006 the Institute of Medicine included "prior first trimester abortion" on a list of risk factors associated with premature birth.6.
此外早在2006年之前，医学研究所的一份早产风险因素清单里包括首次妊娠时堕胎。
Randomized controlled trials comparing methods of pain control in first trimester surgical abortion at less than 14 weeks gestational age using electric or manual suction aspiration.
在第一孕期小于14周使用电动或手动真空抽吸实施的人工流产，以随机对照性的临床试验比较疼痛控制的方法。
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。
Lose-dose aspirin was given to 53 women with recurrent abortion with positive ACA before pregnancy or in the first trimester.
对其中53例a CA阳性反复流产患者在孕前一个月或孕早期采用低剂量阿司匹林治疗。
Lose-dose aspirin was given to 53 women with recurrent abortion with positive ACA before pregnancy or in the first trimester.
对其中53例a CA阳性反复流产患者在孕前一个月或孕早期采用低剂量阿司匹林治疗。
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