The comparison of clinical features in children with different control levels of asthma
XING Yan, LI Zuo-Fen, ZHOU Wei, LI Nan, LIU Ling, BAO Hui-Ling
CJCP . 2015, (2): 138 -143 .  DOI: 10.7499/j.issn.1008-8830.2015.02.006