COPD: more than respiratory.
Puhan
M A
MA
Zoller
M
M
ter Riet
G
G
D005194:Family Practice; D006801:Humans; D010819:Physician's Role; D010818:Practice Patterns, Physicians'; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification / Q000150:complications / Q000175:diagnosis*; D012720:Severity of Illness Index; D013557:Switzerland