00530nas a2200181   4500000000100000008004100001260002700042100001400069700001500083700001600098700001200114700002200126700001300148700001500161700002100176245014400197300000700341       2014                            d  aSao Paulo, Brazil<br/>1 aHopper JL1 aFerreira P1 aRefshauge K1 aDario A1 aSánchez-Romera J1 aSuarez A1 aOrdonana J1 aFerreira Manuela00aAre obestity and body fat distribution assoctiated with low back pain in women? A population-based study of 703 Spanish twins [proceedings]  a78