CJCP     2013 15 (8):  609-613    ISSN: 1008-8830  CN: 43-1301/R Epidemiological survey and analysis of asthma in children aged 0-14 years old in urban and rural areas of Chengdu region LI Min, ZHANG Qiong, SHI Wei-Juan, LI Lan, LI Yan, PANG Ying, YAO Bin, JIANG Hong Sichuan Academy of Medical Sciences and Sichuan Province People's Hospital, Chengdu 610072, China. lmscsy@yahoo.com.cn Received: null  Revised: null  Online: null Supporting info