Spine
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Validation of a self-report questionnaire. ⋯ 3.
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Retrospective case series. ⋯ 4.
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Retrospective review. ⋯ 4.
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Retrospective analysis. ⋯ 4.
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A retrospective study. ⋯ 4.
Validation of a self-report questionnaire. ⋯ 3.
Retrospective case series. ⋯ 4.
Retrospective review. ⋯ 4.
Retrospective analysis. ⋯ 4.
A retrospective study. ⋯ 4.