Predictive Value of Daily Fetal Movement Count Chart for the Fetal Safety of Fetus with Umbilical Cord around Neck 
YE Aimei,LI Zijun,AI Xiaoyu
Chinese General Practice . 2021, (6): 690 -695 .  DOI: 10.12114/j.issn.1007-9572.2021.00.007