%0 Journal Article %B Journal of Clinical Epidemiology %D 2013 %G Eng %M 24021611 %T The smallest worthwhile effect of nonsteroidal anti-inflammatory drugs and physiotherapy for chronic low back pain: a benefit-harm trade-off study %7 2013/09/12 %@ 1878-5921 (Electronic) - 0895-4356 (Linking) %!