00404nas a2200157   4500000000100000008004100001260002200042100001200064700001500076700001400091700001500105700001300120700002100133245008500154300000700239       2014                            d  aSao Paulo, Brazil1 aKoes BW1 aFerreira P1 aFritsch C1 aZambelli R1 aMaher C.1 aFerreira Manuela00aThe clinical course of lumbar spinal stenosis: a systematic review [proceedings]  a88