00368nas a2200145   4500000000100000008004100001260002200042100001500064700001400079700001000093700001500103700001300118245008400131300000700215       2014                            d  aSao Paulo, Brazil1 aHancock M.1 aDownie A.1 aLin C1 aRzewuska M1 aMaher C.00aTrajectories of acute low back pain: latent class growth analysis [proceedings]  a90