1Making progress based on standards to improve the level of prenatal diagnosis in ChinaHU Ya-li, LI Jie785-7872Strategy in introducing NIPT to prenatal screening-thinking from value-based medicineMA Jing-mei, YANG Hui-xia788-7903Consensus on the diagnosis and treatment of female genital chlamydial infectionsInfection Group, Obstetrics and Gynecology Society791-7934Expounding on the main points of Clinical Guideline to Twin-twin Transfusion Symdrome by American Society for Maternal-Fetal Medicine (2013)XIA Qiu-ling, HUANG Shuai, QI Hong-bo794-7985Status and prospect of intrapartum operation on fetusesLIU Cai-xia, LIU Jing-yi799-8026Indications and application of maternal serological prenatal screening in the first and second trimesterZHANG Jin-man, ZHU Bao-sheng803-8067Application of next generation sequencing in noninvasive prenatal testingJIA Bei, ZHONG Mei807-8108Cytogenetic prenatal diagnosis technique and specificationLONG Zhi-gao, XING En-hong, WANG Yu-zhuo811-8149Technique and standard of preimplantation genetic diagnosis and screeningHUANG Jin, MA Caihong814-81710Standard application of prenatal ultrasound examinationLI Sheng-li, WEN Hua-xuan818-82211Application of magnetic resonance imaging in the prenatal diagnosis and the indicationsZHU Ming, DONG Su-zhen822-82512Invasive prenatal diagnosis: indications and applicationGAO Jin-song, LIU Jun-tao825-82813Prenatal screening and prenatal diagnosis of twin pregnancyWEI Yuan, ZHAO Yang-yu829-83214Application of TORCH and HPV in pre-pregnancy and pregnancyYANG Yang, MENG Tao832-83515SOGC guidelines to chemotherapy and pregnancyCHEN Ming-ming836-84116Correlation analysis of the invasion of cardinal and uterosacral ligaments with metastasis of pelvic lymph node in ⅠA2～ Ⅱ A2 cervical cancer842-84517BMP15 and ESR1 gene polymorphism and POF: a meta-analysisWEI Jing-zan, WANG Xiu-xia846-85218Mechanism of proliferation promotion by resistin in ovarian epithelial cancer cellPANG Li, ZHANG Yi, ZHANG Ying, ZHANG Dan-dan, ZHANG Qiao853-85619Functional change of high-density lipoprotein in early spontaneous abortions and its association with thyriod autoimmunityLI Yuan-mei, ZHANG Qian, ZHAO Hui-dong, XU Feng-sen857-86020Non-invasive haemoglobin measurement in pregnant womenMIN Zhi-hong, LIU Ming, ZHAO Yu, DUAN Tao861-864 