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Vanishing twin syndrome and fetal reduction adversely affect perinatal outcomes following IVF-FET: an analysis based on 33,238 ongoing pregnancies

Published Online: 2026-01-30

Published Print: 2026-03

Authors

Zhang, Jie https://orcid.org/0000-0003-3154-8215
Qiu, Shuwen

Mao, Xiaoyan

Chen, Yan https://orcid.org/0009-0002-4201-6679
Wu, Ling https://orcid.org/0000-0001-9217-9412
Funding

Funding for this research was provided by:

National Natural Science Foundation of China (82171685)
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Text and Data Mining valid from 2026-01-30

Version of Record valid from 2026-01-30
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Article History

Received: 23 September 2025

Accepted: 29 December 2025

First Online: 30 January 2026

Declarations

:

: The study received approval from the hospital’s Institutional Review Board, and due to its retrospective nature and anonymized data analysis, written consent was not required (reference number: SH9H-2024-T205-1).

: The authors have no conflicts of interest to declare.

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