Effects of Prior Induced Termination of Pregnancy on Complications and Pregnancy Outcomes.

Inclusion Criteria

• •women have induced abortion in early pregnancy (\<12 weeks of gestation).
• •permanent population and no tendency to move.
• •normal language expression and understanding ability, able to understand research content.
• •be able and willing to provide written informed consent and effective contact information, and be willing to cooperate with follow-up investigations.