The GOLD classification has advanced understanding of COPD.
Calverley
Peter M A
PM
D014943:Global Health; D006801:Humans; D017410:Practice Guidelines as Topic; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification* / Q000628:therapy; D012106:Research / Q000639:trends; D012129:Respiratory Function Tests / Q000592:standards*; D012720:Severity of Illness Index