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Chronic low back pain patient groups in primary care – A cross sectional cluster analysis

Annika Viniol*, Nikita Jegan, Oliver Hirsch, Corinna Leonhardt, Markus Brugger, Konstantin Strauch, Jürgen Barth, Erika Baum and Annette Becker

BMC Musculoskeletal Disorders 2013, 14:294  doi:10.1186/1471-2474-14-294

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