title: Epidemiology of drug utilization--basic concepts and methodology.
authors.affiliation: Department of Pharmacotherapeutics, University of Oslo, Norway.
authors.forename: P K
authors.initials: PK
authors.lastname: Lunde
authors.forename: I
authors.initials: I
authors.lastname: Baksaas
mesh_terms: D011307:Drug Prescriptions; D004363:Drug Utilization; D004812:Epidemiologic Methods; D006801:Humans; D011446:Prospective Studies / Q000379:methods; D012189:Retrospective Studies / Q000379:methods