Content and outcome of usual primary care for back pain: a systematic review by Simon Somerville, Elaine Hay, Martyn Lewis, Julie Barber, Danielle van der Windt, Jonathan Hill, and Gail Sowden BJGP Volume 58(556): November 1, 2008 ©2008 by British Journal of General Practice
Systematic review flowchart. Simon Somerville et al. Br J Gen Pract 2008;58: ©2008 by British Journal of General Practice
Change in Roland–Morris Disability Questionnaire (RMDQ) scores over time according to duration of acute/subacute back pain. Simon Somerville et al. Br J Gen Pract 2008;58: ©2008 by British Journal of General Practice
Change in Roland–Morris Disability Questionnaire (RMDQ) scores over time according to duration of chronic back pain. Simon Somerville et al. Br J Gen Pract 2008;58: ©2008 by British Journal of General Practice
Change in Roland–Morris Disability Questionnaire (RMDQ) scores over time according to duration of mixed back pain. Simon Somerville et al. Br J Gen Pract 2008;58: ©2008 by British Journal of General Practice