The GOLD classification has not advanced understanding of COPD.
Kerstjens
Huib A M
HA
D014943:Global Health; D006801:Humans; D017410:Practice Guidelines as Topic; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification* / Q000175:diagnosis; D012106:Research / Q000639:trends; D012129:Respiratory Function Tests / Q000592:standards*; D012720:Severity of Illness Index