Spine
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    A prospective radiographic comparative study. ⋯ 4. 
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    A prospective cohort study. ⋯ 2. 
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    Comparative StudyVariability Analysis of Manual and Computer-Assisted Preoperative Thoracic Pedicle Screw Placement Planning.A comparison among preoperative pedicle screw placement plans, obtained from computed tomography (CT) images manually by two spine surgeons and automatically by a computer-assisted method. ⋯ 3. 
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    Retrospective analysis. ⋯ 4.