1@@129-1312@@132-1343Microenvironment of maternal-fetal interface and preterm birthMENG Nan, ZHANG Si-ya, HUANG Lin, WANG Hai-bin135-1404Genital tract infection and preterm birthSUN Wen, LIU Shi-liang140-1435Determination of residual amniotic fluid and perinatal outcomes in preterm premature rupture of membranesGONG Xun, DENG Dong-rui143-1466Cerclage for cervical insufficiency to prevent preterm birthLI Xue, ZHANG Hong146-1507Progestogen for the prevention of preterm birthFEI Kui-lin, ZHANG Wei-she150-1548Prevention and treatment of preterm birth in twin pregnancyYUAN Peng-bo, ZHAO Yang-yu154-1589Use of antenatal corticosteroids for premature birthWU Jian-li, ZHU Qi-ying158-16010Application of antibiotics in PPROMSUN Xiao, SHI Chun-yan160-16411@@165-17012Comparison of the high risk factors of single and twin premature birth with the outcome of premature infantsLI Si-hui, GONG Jing-jin, MO Jin-hua, LIU Gui-hong, YU Bo-lan, LIU Shi-liang, WANG Hai-bin, CHEN Dun-Jin171-17513Value of maternal age and fasting blood glucose levels of early pregnancy in prediction of gestational diabetes mellitusJIANG Yan, LI Guang-hui, LIU Xiao-wei176-18014Short-term effects of application of titanized polypropylene lightweight mesh in modified total pelvic floor reconstructionAI Fang-fang, ZHU Lan, SUN Zhi-jing, CHEN Juan, SHI Hong-hui, LANG Jing-he181-18515Ratio analysis of the vaginal cervical hypertrophy, elongation and pelvic organ prolapseCHENG Yue, XIA Zhi-jun186-18916Delivery mode and time of the women complicated with severe preeclampsia in China : a multicentre surveyWU Shao-wen, LI Guang-hui, ZOU Li-ying, CHEN Yi, RUAN Yan, ZHANG Wei-yuan190-19417Clinical analysis of unexpected uterine sarcoma during laparoscopic surgeries for uterine myomaLIU Fu-jun, LIANG Hai-yan, LIANG Jing, FENG Ding-qing, YAN Ke-qin, CHEN Qing-yun, LING Bin195-19818An etiological study on 392 cases of fetal death and the discussion of the preventive measures to reduce fetal death rateLIU Hai-hong, LI Xue-lan199-20219Comparison of the outcome of intracytoplasmic sperm injection in men with obstructive and non-obstructive azoospermiaKUAI Yan-rong, HE Zhan-ju, WANG Sheng, ZHANG Kai, ZEN Cheng, WANG Ling, YUAN Yi-ming, PEN Jing, CHEN Liang, XUE Qing, XU Yang, YANG Hui-xia203-20820Curative effect observation on etonogestrel implants treatment for adenomyosis: an analysis of 29 cases analysisWU Jian-bo, HUANG Yu-xiu, HU Ji-fen209-213 