CJCP     2015 17 (2):  134-137    ISSN: 1008-8830  CN: 43-1301/R Utility of fractional exhaled nitric oxide in children with asthma AN Shu-Hua, TIAN Wen-Qiu, LI Jin-Ying Department of Respiratory Medicine, Hebei Children's Hospital, Shijiazhuang 050031, China Received: 2014-07-21  Revised: 2014-09-04  Online: null Supporting info null