Formoterol and ipratropium in COPD.
Friedman
Mitchell
M
D000280:Administration, Inhalation; D004983:Ethanolamines / Q000008:administration & dosage*; D000068759:Formoterol Fumarate; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage*; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
D004983:Ethanolamines; D009241:Ipratropium; D000068759:Formoterol Fumarate