title: [Prevalence and incidence].
authors.forename: B G
authors.initials: BG
authors.lastname: Iversen
mesh_terms: D017281:Cost of Illness; D003428:Cross Infection / Q000191:economics / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D009664:Norway / Q000453:epidemiology; D015995:Prevalence