School dropout: a major public health challenge: a 10-year prospective study on medical and non-medical social insurance benefits in young adulthood, the Young-HUNT 1 Study (Norway)
Karin A A De Ridder, Kristine Pape, Roar Johnsen, Steinar Westin, Turid Lingaas Holmen, Johan Håkon Bjørngaard
J Epidemiol Community Health Nov 2012, 66 (11) 995-1000; DOI: 10.1136/jech-2011-200047