%0 Journal Article
%T Sleep in 40-45-year-olds in Hordaland county, Norway
%A Reidun Ursin
%A Fred Holsten
%A Bj£¿rn Bjorvatn
%J Norsk Epidemiologi
%D 2011
%I Norsk Forening for Epidemiologi
%U http://www.ub.ntnu.no/journals/norepid/2006-2/2006(2)%2006-Ursin.pdf