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Gugliotta, Marinella; Da Costa, Bruno R; Dabis, Essam; Theiler, Robert; Jüni, Peter; Reichenbach, Stephan; Landolt, Hans; Hasler, Paul (2016). Surgical versus conservative treatment for lumbar disc herniation: a prospective cohort study. BMJ open, 6(12), e012938. BMJ Publishing Group 10.1136/bmjopen-2016-012938