Aerosol bronchodilators in preventive treatment of asthma.
D000336:Aerosols; D001249:Asthma / Q000517:prevention & control*; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans
D000336:Aerosols; D001993:Bronchodilator Agents