CJCP     2013 15 (2):  109-111    ISSN: 1008-8830  CN: 43-1301/R Epidemiological survey of childhood asthma in Hefei City, China XIONG Mei, NI Chen, PAN Jia-Hua, WANG Qiang, ZHENG Li-Lin Department of Pediatrics, Provincial Hospital Affiliated to Anhui Medical University, Hefei 231000, China. lxm2010@163.com Received: null  Revised: null  Online: null Supporting info