Amniotic fluid microbiota and metabolism with non-syndromic congenital heart defects: a multi-omics analysis. - Xu, Wenli; Li, Lu; Kang, Hong; Wang, Meixian; Liu, Yanqun; Wang, Guicun; Yu, Ping; Liang, Juan; Liu, Zhen (BMC Pregnancy & Childbirth, 2025)