title: A 63-year-old man with progressive dyspnea.
authors.affiliation: Division of General Medicine and Clinical Epidemiology, University of North Carolina Hospital, Chapel Hill 27599, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Greganti
authors.forename: P L
authors.initials: PL
authors.lastname: Molina
authors.forename: M
authors.initials: M
authors.lastname: Allen
mesh_terms: D002908:Chronic Disease; D003937:Diagnosis, Differential; D018450:Disease Progression; D004417:Dyspnea / Q000209:etiology*; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011020:Pneumonia, Pneumocystis / Q000150:complications* / Q000175:diagnosis*