Risk of preterm birth by cervical length at time of decision for cerclage.
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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 cervical length (in mm) at the time of decision for cerclage, compared with those with the ‘longer’ cervical lengths (21-25mm).
创建时间：
2017-06-02
