Evaluating a targeted person-centred pain management intervention programme in lumbar spine surgery - a controlled segment-specific before-and-after interventional design.

"Declarations Ethics approval and consent to participateThe Swedish Ethical Review Authority (Gothenburg Regional Ethical Review Board) approved the study (ID number 124 − 16), which conforms to the principles of the Declaration of Helsinki [21]. Written informed consent was given by the participants. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This study was financed by grants from the Swedish state under the agreement between the Swedish government and the county councils, the ALF agreement (ID number 238801). The study was also funded by The Hjalmar Svensson Foundation. The funders were not involved in the study design, data collection, data analysis or interpretation of data, nor in writing the manuscript. Open access funding provided by University of Gothenburg."