00521nas a2200181   4500000000100000008004100001260002200042100001500064700001700079700002000096700001500116700001400131700000500145700001500150700002100165245014600186300000700332       2014                            d  aSao Paulo, Brazil1 aPinheiro M1 aRefshauge KM1 aColodro-Conde L1 aCarrillo E1 aHopper JL1 a1 aFerreira P1 aFerreira Manuela00aAre symptoms of depression associated with low back pain when genetics is considered? A population-based study of spanich twins [proceedings]  a54