1Ethical Issues of Artificial Insemination by DonorWANG Ting, SHI Xiao, QUAN SongHot Topic269-2722Analysis of Blood Traceelements in Preschool Children Born from Assisted Reproductive TechnologyOriginal Article273-2773Analysis of the Factors Affecting Abnormal Fertilization after in Vitro Fertilization and Intracytoplasmic Sperm InjectionLIU Bai-ling, SUN Ying-pu, DAI Wei, BU Zhi-qinOriginal Article278-2824Level of Serum P/E2 on Day 6 after Embryo Transfer of COH and Clinical Outcomes of IVF/ICSI-ETXIANG Yun-gai, WAN Li-jing, SONG Yu-xia, CHU Xi-ying, TAN LiOriginal Article283-2855Effect of Laser-assisted Hatching on Clinical Outcomes of Frozen-thawed Embryo Transfer at Cleavage Stage and BlastocystZHAO Fang, LYU Yu-zhen, WANG Juan, TIAN Ke-keOriginal Article286-2896Retrospective Analysis of Azoospermia:A Report of 500 CasesOriginal Article290-2927Molecular Epidemiological Survey of Deafness Related Genes in 6 945 NewbornsFENG Ji-zhen, LI Tian-jie, MO Zhong-fu, LI Li-xin, WANG Ya-fanOriginal Article293-295,3018Application of HPV Screening Plus ws Classification in Cervical Lesions of High-risk PatternPENG Min, ZHANG Jian-lan, MO Ju-ling, ZHOU Dong-hua, LIU Xiao-yanOriginal Article296-2989@@299-30110@@302-30311Adverse Exposure during Pregnancy and Fetal Origins of Adult DiseasesMENG Ye, LYU Ping-pingReview304-30812Is Air Pollution Associated with Gestational Hypertension and Diabetes?ZHANG Yan-yan, HOU Hai-yanReview309-31113GABA and its Receptor and Female ReproductionDAI Huang-guanReview312-314,31814Roles of let-7c in Regulating Ovarian FunctionHONG Li-mingReview315-31815Human Pre-implantation Embryo DevelopmentLI Min, ZHANG Wen-ke, CHEN Li, XU Xiao-feiReview319-32316Pre-implantation Genetic Diagnosis in Embryos of Translocation CarriersZHANG Wen-ke, XU Xiao-fei, LI Min, CHEN LiReview324-32717LH-inducing Pathways in Androgen Biosynthesis of Ovarian Theca-cellsXU Si-liang, LIU Jia-yinReview328-33218Molecular Mechanisms of Oocyte Maturation Induced by LH Surge in Natural CycleMA Wen-hongReview333-33819Luteal Phase Support in Cycles of Frozen-thawed Embryo TransferLUO Yi-qunReview339-34320Treatment Strategy of Adenomyosis Combined with Infertility before Assisted ReproductionLI Dong-juReview344-348 