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The authors report no conflict of interest.
This study received no financial support.
This study was registered with the International Prospective Register of Systematic Reviews (registration number: CRD42021233077) on March 6, 2021.
This study was presented at the 2022 Society for Maternal-Fetal Medicine Annual Pregnancy Meeting, held virtually, January 31, 2022, to February 5, 2022.
K.S.K. is a distinguished investigator supported by the Beatriz Galindo (senior modality) Program grant given to the University of Granada by the Ministry of Science, Innovation and Universities of the Spanish Government.
All authors have completed the International Committee of Medical Journal Editors uniform disclosure form at http://www.icmje.org/coi_disclosure.pdf and declare no support from any organization for the submitted work, no financial relationship with any organizations that might have an interest in the submitted work in the previous 3 years, and no other relationships or activities that could seem to have influenced the submitted work.
The lead author (the manuscript's guarantor) affirms that the manuscript is an honest, accurate, and transparent account of the study being reported, that no important aspect of the study has been omitted, and that any discrepancies from the study as planned have been explained.