Spine
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Microarray approach and integrated gene network analysis. ⋯ N/A.
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Cross-sectional study. ⋯ 4.
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A retrospective cohort study. ⋯ 3.
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In vitro culture of porcine bone marrow stem cells (BMSCs) in varying pH microenvironments in a three-dimensional hydrogel system. ⋯ N/A.
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The RAND/UCLA Appropriateness Method is a well-established means of developing criteria for assessing the appropriateness of surgery in specific subpopulations. It involves a systematic review of the literature and ratings by a multidisciplinary panel of national experts. ⋯ 3.