title: The importance of epidemiological studies should not be downplayed.
authors.forename: Valery L
authors.initials: VL
authors.lastname: Feigin
authors.forename: George
authors.initials: G
authors.lastname: Howard
mesh_terms: D016021:Epidemiologic Studies; D019317:Evidence-Based Medicine / Q000379:methods*; D006801:Humans; D010506:Periodicals as Topic / Q000639:trends; D016032:Randomized Controlled Trials as Topic