1Gestational management and delivery of twin pregnancyZOU Xin-yi, LI Chuang, WEI Jun133-1382Clinical consultation for discordant structural malformations in monochorionic diamniotic twinsGAO Li, WANG Yan-lin138-1413Advances in the application of intrauterine intervention techniques for complicated twin pregnanciesQIU Wan-ning, YUAN Peng-bo, WEI Yuan142-1474Rearch progress in the pathogenesis of complicated twin complicationsGONG E, WANG Lan, QI Hong-bo, DING Yu-bin147-1545Prediction and management of severe maternal complications and comorbidities in twin pregnancyZHAO Bao-jing, YANG Xin-yi, YIN Zong-zhi155-1606Early prediction and clinical management of preterm birth in twin pregnanciesHU Xiao-yu, ZOU Gang161-1667Early prediction of complications of monochorionic diamniotic twin pregnancyYOU Jin-yu, SONG Li-zhu, LUO Yan-min167-1728Management strategies for assisted reproductive technology-assisted twin pregnanciesHONG Fan-zhen172-1779Impact of fasting blood glucose in early pregnancy and high-risk factors on gestational diabetes mellitus and other adverse perinatal outcomes in singleton and twin pregnanciesLI Xiang, SHENG Qing, WU Tian-chen, GONG Xiao-li, WANG Ying, CHEN Lian, YUAN Peng-bo, ZHAO Yang-yu, WEI Yuan228-23310Efficacy and safety of Dingkundan combined with compound short-acting oral contraceptives in the treatment of polycystic ovary syndrome:an open label,non-randomized controlled clinical studyQIU Lin, LIU Jiang-ling, MO Hui, LI Li234-24011Study on risk factors of severe postpartum hemorrhage during vaginal deliveryWANG Hong-bin, CHEN Xiao, GUO Kai-hua, ZHANG Jing, ZHAO Xia, ZHNAG Yong-xin, ZHU Yu, CUI Rong, ZHANG Guo-hua241-24412Comparison of the efficacy of two treatment modes of pelvic floor rehabilitation on postpartum pelvic floor muscle function repairCAI Yu-jing, ZHOU Si-qi, LIU Qi-fang, XU Xiao-yan, LIU Mu-biao245-248