title: Old dogs: new tricks, old tricks, or no tricks.
authors.affiliation: Department of Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA 1512-4772, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Daffner
mesh_terms: D005180:Faculty, Medical; D008611:Mentors; D011871:Radiology