00486nas a2200205   4500000000100000008004100001100002200042700001700064700001600081700001100097700001200108700001500120700001500135700001500150700001300165245007900178300001000257490000700267050000600274       2009                            d1 aHenschke Nicholas1 aRefshauge K.1 aHerbert Rob1 aDas A.1 aYork J.1 aBleasel J.1 aCumming R.1 aMcAuley J.1 aMaher C.00aCharacteristics of acute low back pain patients presenting to primary care  a5-11.0 v25  aY