1Effect of the Descend Range of Estradiol after Oocyte Retrieval in Antagonist Regimen on the Outcome of In Vitro Fertilization and Embryo TransferZHOU Yu-xi, ZHANG Juan, ZHANG Juan-juan, LING Xiu-feng, ZHAO ChunOriginal Article265-2692Bioanalysis of Non-Obstructive Azoospermia at Different Arrest StagesWANG Wan-lun, LIU Tong-jia, ZHANG Ting, LI Shuo, BIAN Yan-chao, XIAO RuiOriginal Article270-274,2973Evaluation on the Application of Special Lectures about Scientific Contraception in Health Education in A University in NanjingYANG Yue-hua, SUN Zhi-mingOriginal Article275-2784A Clinical Analysis of 13 Cases of Ovarian Sertoli-Leydig Cell TumorXU Qian, CHENG Jiu-meiOriginal Article279-2835Male Azoospermia Caused by Compound Heterozygous Mutation in CYP21A2 Gene and Multi-Gene Mutations:A Case Report and Literature ReviewGONG Yi-xin, DING Yu, LUO Si-hui, ZHENG Xue-yingCase Report284-2886Two Cases of 21-Hydroxylase Deficiency in Reproductive Age Misdiagnosed as Polycystic Ovary Syndrome and Literature ReviewCHI Xue-xiu, GUO Bao-qiang, YU Shan, HE Dong-huaCase Report289-2937A Case of Successful Delivery in An Infertile Patient with Ovarian Resistance Syndrome: Treated with Antagonist Protocol and Fresh-Embryo TransferCHEN Ya-nan, GUO Jia-li, LI Ze-wu, YANG Ai-junCase Report294-2978A Case of Spontaneous Ovarian Hyperstimulation Syndrome in PregnancyZHOU Duo, LI Heng-jing, LU Guang-mei, HUANG Qiu-fang, ZHANG YiCase Report298-3019Clinical Treatment Strategies of Repeated Implantation FailureWANG Yan, MENG Qing-xiaReview302-30710Injury Factors of Vitrification Cryopreservation and Transplantation of Ovarian CortexHUANG Shao-feng, NIU Xiang-li, LIN Zhong, ZHU Xue-hong, BIN Li, LIU Shu-cenReview308-31211Autophagy Participated in Pathological Mechanism of Premature Ovarian InsufficiencyYAO Ting, YANG Hong-mei, CUI Li-hua, MENG Qing-fangReview313-31712Effect of Circadian Rhythm Disorder on Ovarian FunctionWANG Zi-xin, SONG Jia-yi, XIA TianReview317-32113Advances of Stem Cell Therapy for Endometrial InjuriesSHEN Yan-qing, CHEN Huang, CHEN YeReview322-32614Leukemia Inhibitory Factor Related to Endometrial ReceptivityZHANG Xiao-xuan, ZHAI Chao, LI Guang-can, REN Chun-eReview327-33115Advance of Pierson SyndromeLIAO Zhen-hua, YANG Feng-xun, JIANG Hong-kun, LU YuReview332-33616Roles of Growth Differentiation Factor 15 in Gestational DiseasesSHI Zi-yun, LIANG Jing, ZHANG YingReview337-34117Research Progress of High-Risk Human Papillomavirus Negative Cervical CancerLI Yu-lan, LIU Xiao, HAN Feng-jiao, YUE Ling, XU Fei-xueReview342-34618Interpretation of "2021 ACOG Clinical Consensus: Pharmacologic Stepwise Multimodal Approach for Postpartum Pain Management"WANG Bin, GUAN Bo-yang, TIAN Yun, SUN Ying, ZHUANG Guo-liStandard and Guideline347-352 