Use of ipratropium for severe asthma.
D000208:Acute Disease; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D002648:Child; D006801:Humans; D009241:Ipratropium / Q000627:therapeutic use*
D001993:Bronchodilator Agents; D009241:Ipratropium