TY - JOUR AU - Macedo L. BT - Rheumatology CN - Y LA - eng LB - MS M1 - 10 N1 - AR10 - 1st qtr PY - 2009 EP - 1333. T2 - Rheumatology TI - Analgesic effects of treatments for non-specific low back pain: a meta-analysis of placebo-controlled randomized trials: Comment VL - 48 ER -