Despite improements in antenatal and intrapartum care, stillbirth, defined as in utero fetal death at 20 weeks of gestation or greater, remains an important, largely unstudied, and poignant problem in obstetrics.

• 虽然对产前和产时的照顾已改进，死产（被定义为妊娠达到或超过20周后胎儿子宫内死亡）仍然是一项重要的、很多不清楚的令人悲痛的产科学问题。