AUTHOR=Zhang Lei , Chen Zijin , Hu Shuai , Liu Hong , Lai Fan , Fan Yinghong , Li Min , Zhou Ling TITLE=Assessment of the placental microbiota of preterm infants with pneumonia: a case control study JOURNAL=Frontiers in Cellular and Infection Microbiology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2025.1511141 DOI=10.3389/fcimb.2025.1511141 ISSN=2235-2988