| NCT Number | NCT03561766 |
| Lead Sponsor | Shengjing Hospital |
| Conditions | Twin; Complicating Pregnancy, Advanced Maternal Age Pregnancy, Scarred Uterus, Overweight and Obesity |
| Enrollment | 1,000 participants |
| Start Date | 2018-06-15 |
| Primary Completion | 2020-06 (estimated) |
| Study Completion | 2037-06 (estimated) |
| Updated on ClinicalTrials.gov | 2019-12-12 |