Defining chronic obstructive pulmonary disease... and the elephant in the room.
Mannino
D M
DM
D006801:Humans; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification* / Q000453:epidemiology / Q000503:physiopathology*; D012129:Respiratory Function Tests; D018570:Risk Assessment; D012720:Severity of Illness Index