目的：探讨应激及其应对方式与早产和胎盘促肾上腺皮质激素释放激素(corticotropin releas - ing hormone, CRH)信使核糖核酸(mRNA)水平的相关性。

Objective: To explore the correlation of stress, coping style and placental corticotropin releasing hormone (CRH) CRH-mRNA level between preterm birth and normal birth.

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