title: [Primary, first choice or first-line?].
authors.affiliation: erlend.hem@medisin.uio.no
authors.forename: Erlend
authors.initials: E
authors.lastname: Hem
authors.forename: Geir W
authors.initials: GW
authors.lastname: Jacobsen
mesh_terms: D004358:Drug Therapy / Q000145:classification*; D009664:Norway; D012660:Semantics; D009626:Terminology as Topic