title: [Citizens of all Schengen-agreement countries--keep a firm hold of your necessaire!].
authors.forename: C
authors.initials: C
authors.lastname: Petersson
mesh_terms: D002568:Certification; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence; D005062:European Union; D006801:Humans; D007880:Legislation, Drug; D014195:Travel