[The problems of beta 2 adrenergic agonist in the treatment of asthma].
Guo
X J
XJ
Deng
W W
WW
D000318:Adrenergic beta-Agonists / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D006801:Humans
D000318:Adrenergic beta-Agonists