How to control asthma.
D001249:Asthma / Q000188:drug therapy / Q000517:prevention & control*; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D004357:Drug Synergism; D006801:Humans; D012138:Respiratory Therapy
D001993:Bronchodilator Agents