Objective To understand the causes of controlled preterm labor, and study its pregnant prognosis.

目的了解干预性早产的发生因素及对妊娠结局的影响。

youdao

Objective To understand the causes of controlled preterm labor, and study its pregnant prognosis.

目的了解干预性早产的发生因素及对妊娠结局的影响。

youdao