结论降低剖宫产率是减少凶险型前置胎盘发生的关键。

Conclusion The key point of reducing the incidence of pernicious placenta praevia is to step down the rate of cesarean section.

youdao

结论降低剖宫产率是减少凶险型前置胎盘发生的关键。

Conclusion The key point of reducing the incidence of pernicious placenta praevia is to step down the rate of cesarean section.

youdao