TY - JOUR AU - Hodges P. AU - Latimer Jane AU - Costa Leonardo AU - Shirley D. AU - Maher C. BT - European Spine Journal CN - Y LA - eng LB - MS M1 - 7 N1 - AR10 - 2nd qtr PY - 2009 SP - 1059 EP - 65. T2 - European Spine Journal TI - An investigation of the reproducibility of ultrasound measures of abdominal muscle activation in patients with chronic non-specific low back pain VL - 18 ER -