Efficacy of cervical pessary versus cervical cerclage in preventing spontaneous preterm birth: a meta-analysis
Ya-na Liu a,b*, Zhi-wei Xue a,b*, Shu Zhoua,b
a Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041 Chengdu, Sichuan, China
b Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, 610041 Chengdu, Sichuan, China
*Authors contributed equally to this work.
Correspondence to: Shu Zhou,E-mail: zhoushu_1109@163.com
Funding: This study was supported by the National Key Research and Development Program of China (Grant NO: 2018YFC1004603),