Preterm birth and stillbirth: total bile acid levels in intrahepatic cholestasis of pregnancy and outcomes of twin pregnancies: a retrospective cohort study from 2014 to 2022. - Zhao, Yongzhao; Zhang, Qianwen; Sheng, Yuting; Zhang, Man; He, Guolin; Liu, Xinghui (BMC Pregnancy & Childbirth, 2025)