CJCP     2013 15 (7):  535-540    ISSN: 1008-8830  CN: 43-1301/R Meta-analysis of risk factors for childhood cerebral palsy during pregnancy XUE Jing, CHEN Li-Zhang, XUE Lei, ZHOU Quan Department of Epidemiology, Public Health School of Central South University, Changsha 410078, China. chenliz@csu.edu.cn Received: null  Revised: null  Online: null Supporting info