title: Stay in the loop!
authors.affiliation: Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
authors.forename: Siddhartha G
authors.initials: SG
authors.lastname: Kapnadak
authors.forename: John W
authors.initials: JW
authors.lastname: Kreit
mesh_terms: D000368:Aged; D000402:Airway Obstruction / Q000175:diagnosis* / Q000209:etiology; D001706:Biopsy; D001999:Bronchoscopy; D002356:Cartilage / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011081:Polychondritis, Relapsing / Q000150:complications* / Q000175:diagnosis; D013147:Spirometry; D014057:Tomography, X-Ray Computed; D014132:Trachea / Q000000981:diagnostic imaging / Q000473:pathology*; D014133:Tracheal Diseases / Q000150:complications* / Q000175:diagnosis