00457nas a2200157   4500000000100000008004100001100001200042700002100054700001200075700001500087700001200102700001400114245010100128250002100229020004900250       2013                            d1 aKent P.1 avan der Windt D.1 aMain C.1 aMansell G.1 aHill J.1 aKamper S.00aHow can we design low back pain interventionsStudies to better explain the effects of treatment?  a7 December 2013.  a1528-1159 (Electronic) - 0362-2436 (Linking)