title: An overview of study design.
authors.forename: J M
authors.initials: JM
authors.lastname: Cardwell
mesh_terms: D000818:Animals; D004812:Epidemiologic Methods / Q000662:veterinary*; D016021:Epidemiologic Studies; D019317:Evidence-Based Medicine; D016032:Randomized Controlled Trials as Topic / Q000662:veterinary; D012107:Research Design