TY - CONF AU - Ferreira P. AU - Refshauge K. AU - Kent P. AU - Manniche C. AU - Jensen T. AU - Maher C. AU - Ferreira Manuela BT - Primary Care Research on Back Pain International Forum XII CY - Odense, Denmark LA - eng PP - Odense, Denmark PY - 2012 EP - 31 T2 - Primary Care Research on Back Pain International Forum XII TI - Does the report of a cause for low back pain matter? A comparison of patients who report a cause for an episode of low back pain and those who don't. ER -