Generalist versus pulmonologist care for severe chronic obstructive pulmonary disease.
Freedman
A P
AP
D000046:Academic Medical Centers; D005194:Family Practice; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000628:therapy*; D010043:Outcome and Process Assessment, Health Care; D015272:Pulmonary Medicine; D012720:Severity of Illness Index; D014481:United States