Spine
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Observational study. ⋯ 4.
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Retrospective cohort study of prospectively collected data. ⋯ 3.
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Retrospective cohort study. ⋯ 3.
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An animal experimental study was designed to investigate the efficacy of combined magnetic fields (CMF) treatment and nano-hydroxyapatite (HA) coating in the biphasic calcium phosphate (BCP) graft in posterolateral lumbar fusion. ⋯ N/A.