Usefulness of GOLD classification of COPD severity.
Köhler
D
D
Fischer
J
J
Raschke
F
F
Schönhofer
B
B
D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D011237:Predictive Value of Tests; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification* / Q000175:diagnosis; D012189:Retrospective Studies; D014797:Vital Capacity / Q000502:physiology