COPD therapy: if two is good, is three better?
School of Ageing and Chronic Disease, University of Liverpool, Liverpool L69 3BX, UK. Electronic address: pmacal@liverpool.ac.uk.
Peter M A
PM
Calverley
D001993:Bronchodilator Agents / Q000627:therapeutic use*; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
D001993:Bronchodilator Agents