1. Hvitfeldt T, Hibell B. Skolelevers drogvanor 2002. (Students’ use of drugs 2002). Press release in June 2002 from CAN, the Swedish Council for Information on Alcohol and other Drugs. Information available also in English at http://www.can.se Also report 68: Trends in Alcohol and other drugs in Sweden Report 2002. It also contains the 1995 and 1999 ESPAD Survey (The European School Survey on Alcohol and other Drugs)
2. The National Board of Health and Welfare. Centre for epidemiology, official statistics of Sweden. Available at: http://www.sos.se. Accessed September 24, 2002
3. Normative developmental behaviour with implications for health and health promotion among adolescents. A Swedish cross-sectional survey;Berg-Kelly;Acta Paediatr,1995
4. Children’s Health and Well-being in the Nordic Countries;Köhler,1987
5. King A, Wold B, Tudor-Smith C, Harel Y. A Report of the 1993-94 Survey Results of Health Behaviour in School-aged Children. A WHO Cross-national Study. WHO Regional Publications, European Series No 69