Effectiveness of Targeted Cervical Length Screening Guided by a Preterm Birth Risk Scoring System in Reducing the Rate of Preterm Birth
Conditions
Interventions
- OTHER: Preterm birth risk scoring system
- DEVICE: Transvaginal ultrasound cervical length measurement
- DEVICE: Transvaginal ultrasound cervical length measurement
- DRUG: Vaginal Progesterone
- PROCEDURE: Cervical cerclage
Sponsor
Ningbo University
Collaborators
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