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Psychiatric comorbidity as predictor of costs in back pain patients undergoing disc surgery: a longitudinal observational study

Alexander Konnopka*, Margrit Löbner, Melanie Luppa, Dirk Heider, Sven Heinrich, Steffi Riedel-Heller, Hans Jörg Meisel, Lutz Günther, Jürgen Meixensberger and Hans-Helmut König

BMC Musculoskeletal Disorders 2012, 13:165  doi:10.1186/1471-2474-13-165

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