Risk of preterm birth by height of cerclage from external os.
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资源简介：
The relative risk of preterm birth before 34 and 37 weeks of gestation is shown in subgroups of women depending on the distance between external os and suture in mm compared to the remainder of the cohort. The relative risk of preterm birth is increased in those with a lower cerclage height.
创建时间：
2017-06-02
