title: Creating guidelines and treating patients when there are no trials or systematic reviews.
authors.forename: Andrew F
authors.initials: AF
authors.lastname: Smith
mesh_terms: D022126:Access to Information; D000758:Anesthesia / Q000379:methods / Q000592:standards; D000776:Anesthesiology / Q000379:methods* / Q000592:standards; D020000:Decision Support Systems, Clinical; D019317:Evidence-Based Medicine / Q000592:standards; D006801:Humans; D017410:Practice Guidelines as Topic; D016032:Randomized Controlled Trials as Topic; D012196:Review Literature as Topic