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. 2016 Sep 23;95(38):e4834. doi: 10.1097/MD.0000000000004834

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Copyright © 2016 the Author(s). Published by Wolters Kluwer Health, Inc. All rights reserved.

This is an open access article distributed under the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

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Table 3.

Pedicle screw placement grading systems.

3.1.