AUTHOR=Wang Rui , Xu Shan , Hao Xiaoyu , Jin Xingyi , Pan Da , Xia Hui , Liao Wang , Yang Ligang , Wang Shaokang TITLE=Anemia during pregnancy and adverse pregnancy outcomes: a systematic review and meta-analysis of cohort studies JOURNAL=Frontiers in Global Women's Health VOLUME=6 YEAR=2025 URL=https://www.frontiersin.org/journals/global-womens-health/articles/10.3389/fgwh.2025.1502585 DOI=10.3389/fgwh.2025.1502585 ISSN=2673-5059