Influencing Factors of Postpartum Post-traumatic Stress Disorder:a Meta-analysis 
CHEN Ying,QIAN Hongyan,ZHU Yuting,WANG Yuanyuan,QIAN Lihua,KONG Xiang
Chinese General Practice . 2021, (21): 2729 -2733 .  DOI: 10.12114/j.issn.1007-9572.2021.00.470