title: Would our treatment decisions be better justified in the absence of observational data?
authors.forename: A
authors.initials: A
authors.lastname: Laakso
authors.forename: M
authors.initials: M
authors.lastname: Niemelä
authors.forename: J
authors.initials: J
authors.lastname: Hernesniemi
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis* / Q000401:mortality* / Q000628:therapy*; D017063:Outcome Assessment, Health Care / Q000379:methods* / Q000706:statistics & numerical data*