00462nas a2200181   4500000000100000008004100001260002200042100001700064700001500081700000900096700001200105700001200117700001500129700001300144700002100157245009500178300000700273       2014                            d  aSao Paulo, Brazil1 aLatimer Jane1 aSteffen K.1 aLi Q1 aBlyth F1 aKoes BW1 aFerreira P1 aMaher C.1 aFerreira Manuela00aWhat triggers an episode of low back pain? Results of a case-crossover study [proceedings]  a52