Defining chronic obstructive pulmonary disease in an aging population.
Carlos A
CA
Vaz Fragoso
Thomas M
TM
Gill
D000367:Age Factors; D000368:Aged; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification / Q000175:diagnosis*; D012720:Severity of Illness Index