TY - CONF AU - Refshauge K. AU - Henschke N. AU - Maher C. BT - Amsterdam International Forum VIII. Primary care research on low back pain CN - N CY - Amsterdam, The Netherlands LA - eng LB - MS PP - Amsterdam, The Netherlands PY - 2006 T2 - Amsterdam International Forum VIII. Primary care research on low back pain TI - Prognostic factors for acute low back pain in primary care ER -