Inhalation devices.
D000208:Acute Disease; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage* / Q000627:therapeutic use; D000367:Age Factors; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D036501:Metered Dose Inhalers; D011320:Primary Health Care
D000305:Adrenal Cortex Hormones; D001993:Bronchodilator Agents