Result: Premature rupture of membranes and multiple pregnancy are the former two reasons causes premature,premature pregnancy is also related to prenatal care, and another 11.63 percent is unknown.
英
美
- 结果:胎膜早破、多胎妊娠为早产原因的前二位;早产还与孕期母亲未作产前检查相关;另有11.;63%25为不明原因的早产。