Value of fractional nitric oxide concentration in exhaled breath in assessing level of asthma control in children
XIANG Li, FU YA-Nan, LI Zhen, REN Yi-Xin, RAO Xiao-Chun
CJCP . 2013, (1): 29 -32 .  DOI: 10.7499/j.issn.1008-8830.2013.01.008