%0 Journal Article %J Journal of Pain %D 2012 %T Epidemiology of chronic pain: A population-based nationwide study on its prevalence, characteristics and associated disability in Portugal %A Azevedo, L. F. %A Costa-Pereira, A. %A Mendonça, L. %A Dias, C. C. %A Castro-Lopes, J.M. %B Journal of Pain %V 13 %P 773 - 783 %8 2012/// %G eng %U http://www.scopus.com/inward/record.url?eid=2-s2.0-84864477284&partnerID=40&md5=029838b174315d224158e8f02cbba3b6 %N 8