title: Recertification: a challenge to those trained in the "good old days".
authors.forename: W M
authors.initials: WM
authors.lastname: Bennett
authors.forename: L O
authors.initials: LO
authors.lastname: Langdon
mesh_terms: D002568:Certification; D007388:Internal Medicine; D009398:Nephrology; D013044:Specialty Boards; D014481:United States