00658nas a2200181   4500000000100000008004100001100001800042700001400060700001500074700001500089700001400104700002300118245010200141300001200243490000800255050000600263520020700269       2009                            d1 aKnottnerus J.1 aSmeets R.1 aVlaeyen J.1 aHidding A.1 aKester A.1 avan der Heijden G.00aChronic low back pain: physical training, graded activity with problem solving training, or both?  a543-9. 0 v153  aY3 a<p>
<strong>Alternate title: </strong>Chronische lage rugpijn: fysieke training, stapsgewijs opgevoerde activiteit met probleemoplossende training, of combinatie. Geen verschil in effectiviteit
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