CJCP     2010 12 (08):  645-649    ISSN: 1008-8830  CN: 43-1301/R An epidemiologic survey on blood lead levels in preschool children living in towns of Hunan Province JI Geng-Zhong, DENG Fang-Ming, WU Xin-Yin, LI Qing-Xiang, SONG Jian-Hui, LI Wen-Hai, YIN Fei Department of Pediatrics, Xiangya Hospital, Central South University, Changsha 410008, China. Email: 623058657@qq.com Received: null  Revised: null  Online: null Supporting info