Risk factors of 6~8 weeks postpartum pelvic floor dysfunction:a meta-analysis
LI Jie, LIANG Yi, ZHOU Nan, YIN Shaohua, GONG Jingjing, LU Hong
Chinese Journal of Nursing . 2019, (8): 1241 -1247 .  DOI: 10.3761/j.issn.0254-1769.2019.08.027