title: [The National Board of Health and Welfare and the National Social Insurance Board: Questions and answers concerning ICD codes on formularies for sickness certification].
authors.forename: Bo
authors.initials: B
authors.lastname: Jordin
authors.forename: Göran
authors.initials: G
authors.lastname: Blennow
mesh_terms: D002568:Certification; D006801:Humans; D038801:International Classification of Diseases; D011635:Public Health Administration; D018582:Sick Leave / Q000145:classification*; D013548:Sweden