title: Response to personal viewpoint on revalidation.
authors.forename: Ian
authors.initials: I
authors.lastname: Fletcher
mesh_terms: D002568:Certification; D003113:Colonoscopy / Q000592:standards*; D004521:Educational Measurement; D006801:Humans; D008511:Medicine / Q000592:standards*; D010818:Practice Patterns, Physicians' / Q000592:standards*; D013038:Specialization; D013315:Stress, Psychological; D006113:United Kingdom