Objectives:Our purpose was to evaluate risk factor associations with indicated preterm birth and spontaneous preterm birth.

目的：分析与人工早产和自然早产有关的危险因素。

youdao

Objective: Our purpose was to evaluate risk factor associations with indicated preterm birth and spontaneous preterm birth.

目的分析与人工早产和自然早产有关的危险因素。

youdao