Acta Obstet Gynecol Scand
December 2023
Introduction: The association between extreme birth spacing and adverse outcomes is controversial, and available evidence is fragmented into different classifications of birth spacing.
Material And Methods: We conducted a systematic review of observational studies to evaluate the association between birth spacing (i.e.
Background: Exposure to per- and polyfluoroalkyl substances (PFAS) during pregnancy has been suggested to be associated with adverse pregnancy and birth outcomes; however, the findings have been inconsistent. We aimed to conduct a systematic review and meta-analysis to provide an overview of these associations.
Methods: The online databases PubMed, EMBASE and Web of Science were searched comprehensively for eligible studies from inception to February 2021.