00420nas a2200157   4500000000100000008004100001100001400042700001600056700001500072700001400087700001300101245012400114300001100238490000700249050000600256       2009                            d1 aMacedo L.1 aHerbert Rob1 aMcAuley J.1 aKamper S.1 aMaher C.00aAnalgesic effects of treatments for non-specific low back pain: a meta-analysis of placebo-controlled randomized trials  a520-7.0 v48  aY