Spine
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A retrospective review of charts, x-rays (XRs) and computed tomography (CT) scans was performed. ⋯ 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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A prospective, population-based, birth cohort study. ⋯ 2.