00366nas a2200145   4500000000100000008004100001100001400042700001400056700001700070700001600087700001300103700001300116245007000129250002100199       2013                            d1 aOstelo R.1 ade Vet H.1 aMacaskill P.1 aHenschke N.1 aIrwig L.1 aMaher C.00aRed flags to screen for malignancy in patients with low-back pain  a28 February 2013