title: About levels of evidence.
authors.affiliation: UPMC Shadyside Family Medicine Residency, Pittsburgh, PA, USA. finkelsteina@upmc.edu
authors.forename: Alan
authors.initials: A
authors.lastname: Finkelstein
mesh_terms: D035843:Biomedical Research / Q000145:classification*; D019317:Evidence-Based Medicine / Q000145:classification*; D006801:Humans; D018156:Journalism, Medical