Norsk Epidemiologi (The Norwegian Journal of Epidemiology) is published by the Norwegian Epidemiological Association (NOFE). The journal is normally published twice a year; each individual issue covers a specific theme and is edited by one or more guest editors. The guest editors invite prospective authors to submit articles within the specific theme, unsolicited articles are generally not accepted. The main aims for the thematic issues are to provide comprehensive scientific overviews of the specific fields, and of the work going on within these fields in Norway, and partly in other countries. The Board of NOFE approves the themes for the specific issues, and appoints guest editors. All members of NOFE can suggest topics and editors.