1Comprehensive quality management of clinical technology of assisted reproductionHU Lin-li, SUN Ying-pu581-5832Setting requirements of IVF laboratoryHAN Shu-biao, HUANG Guo-ning583-5863Prevention of adverse accidents in vitro fertilization laboratoryDING Chen-hui, XU Yan-wen586-5914Quality control of human embryo laboratory systemSUN Zheng-yi591-5945Risk management in preimplantation genetic diagnosisXU Yan, XU Yan-wen595-5986General health and mental health of offspring after assisted reproductive technologySHI Yu-hua, CHEN Zi-Jiang598-6017Application of PDCA cycle in the field of ART: with the example of embryo contaminationLIU Jian-qiao, WU Yi-xuan, LIU Hai-ying, DONG Jing-wen602-6058Influence of vaginal microecological environment on the safety of the assisted reproductive technologyZHANG Di-kai, LI Jia-chen605-6089Establish a rigorous management system of assisted reproductive technology on ethics and regulationsZHANG Yun-shan, YANG Kun608-61210Effect of efficient filter replacement of air purification system in IVF laboratory on the outcome of IVFHAN Shu-biao, HAN Wei, HUANG Guo-ning628-63011Treatment for diffuse uterine leiomyomatosis with infertility and the analysis of pregnancy outcomeBAI Qian, MA Cai-hong, SONG Xue-ling, YANG Yan631-63412Optimal course and monitoring indicators of lymphocyte immunotherapy before pregnancy for unexplained recurrent spontaneous abortionHOU Yue, HUANG Ling, ZHU Lei, ZHANG Feng-yue, LI Yuan-yuan, CHEN Guo-qing, SUN Shu-guang, QIAO Chong635-63913Clinical research on prevention of postpartum hemorrhage in cesarean section by ergometrine combined with carbetocin or by oxycontin aloneWEI Qiang, ZHANG Li, WU Lin, CHEN Meng, LIU Xing-hui640-64414Value of blastocyst culture of the poor-quality embryosWANG Tian-ran, WANG Xiu-xia, JIAO Jiao645-64915Application of noninvasive DNA test in prenatal screening of Down's syndrome in twin pregnanciesXIE Xiao-yuan, LIU Xia, XIN Li, CUI Lan, YUE Sheng, ZHANG Yu, LENG Jun-hong, ZHANG Ying650-65316Analysis of the expression of HPV-derived E7 protein in cervical lesions and evaluation of its clinical significanceZHAO Jian, HE Dan, WANG Xiao, HAN Rui, MA De-yong, FENG Hui, DONG Ying654-65717Comparison of thermal effects on pathological diagnosis of cervical specimen margin of two electrosurgical excision methodsCHEN Mei-zhuang, CAI Hui-hua, LIU Mu-biao, LIANG Chun-yan658-66118Plasma leptin and risk of endometrial lesionFENG Zong-hao, LIU Lin-zhi, ZHANG Yan662-66519Investigation and analysis of the utilization of pelvic imaging examinations before treatment for cervical cancer in some parts of mainland ChinaLI Cui-mei, Oldevie Hugueth Ognami, LIAO Ke-dan, LIU Ping, HUO Zhi-feng, YANG Ying, ZHAO Wei-dong, KANG Shan, WANG Wu-liang, HAO Min, CHEN Chun-lin, LANG Jing-he666-67020Clinical study of integrated therapy for adenomyosis with laparoscopic excision of lesions and GnRH-a and traditional Chinese remedy-NeiyixiaoZHANG Qiong, ZHANG Xiao-le, HU Chun-hua, WANG Ping671-674 