Authors: Oyvind Naess; Anne Johanne Søgaard; Egil Arnesen; Anne Cathrine Beckstrøm; Espen Bjertness; Anders Engeland; Peter F Hjort; Jostein Holmen; Per Magnus; Inger Njølstad; Grethe S Tell; Lars Vatten; Stein Emil Vollset; Geir Aamodt Journal: Int J Epidemiol Date: 2007-11-04 Impact factor: 7.196