00470nas a2200169   4500000000100000008004100001260002900042100001200071700001800083700001800101700001400119700001500133700001400148700001300162245010900175490001600284       2015                            d  bPhysiotherapyaSingapore1 aKoes B.1 aLin Christine1 avan Tulder M.1 aPoquet N.1 aHeymans M.1 aEsmail R.1 aMaher C.00aBack schools for acute and sub-acute non-specific low-back pain: update of a Cochrane review  [abstract]0 v101: e1220.