title: "Above or below?".
authors.affiliation: Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109-0376, USA. gbump@umich.edu
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Bump
authors.forename: Vikas I
authors.initials: VI
authors.lastname: Parekh
authors.forename: Sanjay
authors.initials: S
authors.lastname: Saint
mesh_terms: D017714:Community-Acquired Infections / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging; D011859:Radiography