Spine
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Prospective longitudinal study. ⋯ 2.
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Retrospective cohort study. ⋯ 3.
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Retrospective review with qualitative phone interview. ⋯ 4.
Prospective longitudinal study. ⋯ 2.
Retrospective cohort study. ⋯ 3.
Retrospective review with qualitative phone interview. ⋯ 4.