The relation between preterm birth and self-reported spinal pain in pre-adolescence-a study of 47,063 subjects from the Danish National Birth Cohort.

"Declarations Ethical accordanceApproval of the study was obtained from the Danish Data Protection Agency through the joint notification of The Faculty of Health and Medical Sciences at The University of Copenhagen (SUND-2017–09) and the DNBC Steering Committee (2017–23). The procedures used in this study adhere to the tenets of the Declaration of Helsinki. Content to participateParents of the participants (< 18 years) signed an informed consent before participating in the study. No personal identifiable information was accessible. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding Open access funding provided by Royal Library, Copenhagen University Library The study was supported by the Danish Council for Independent Research (DFF-7016-00344)."