%0 Journal Article %T Different outcomes in subgroups of patients with long-term musculoskeletal pain %A Jan Sture Skouen %A Alice Kv£¿le %J Norsk Epidemiologi %D 2011 %I Norsk Forening for Epidemiologi %U http://www.ub.ntnu.no/journals/norepid/2006-2/2006(2)%2012-Skouen.pdf