title: The gathering of evidence, evidence based medicine, and Joseph Heller's Catch 22.
authors.forename: P J
authors.initials: PJ
authors.lastname: Ell
mesh_terms: D003952:Diagnostic Imaging; D019317:Evidence-Based Medicine / Q000379:methods* / Q000639:trends*; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D011340:Problem Solving; D016896:Treatment Outcome