Clinical efficacy and safety of long-term sublingual 
immunotherapy with standardized dermatophagoides farinae drops  in children with bronchial asthma
ZHANG Li-wen,ZHANG Yun-feng,YOU Hai-long,LIU Li,YIN Jia-ning
Journal of Jilin University(Medicine Edition) . 2013, (1): 148 -151 .  DOI: 10.7694/jldxyxb20130133