Conclusion Abnormal pregnancy was proved to be related with RV infection, and the number of times of the spontaneous abortion and RV infection are positively correlated.
结论异常妊娠与风疹病毒感染有相关性，自然流产次数与风疹病毒感染呈正相关。
2
In recent years, many researches on unexplained recurrent spontaneous abortion revealed that URSA is mainly related to immunological factors.
近几年研究表明，不明原因反复自然流产主要与免疫因素有关。
3
Conclusion the success rate of medical abortion is related to gestational age and the diameter of embryo sac.