Spine
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This was a prospective clinical study that took place in an outpatient spine clinic. ⋯ 3.
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A register cohort study. ⋯ 4.
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A prospective cohort study. ⋯ 3.
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Observational Study
Predictors of postoperative pain trajectories in adolescent idiopathic scoliosis.
Prospective observational study. ⋯ 3.
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Retrospective matched-cohort analysis. ⋯ 3.