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. 2019 Feb 8;98(6):e13908. doi: 10.1097/MD.0000000000013908

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Copyright © 2019 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc/4.0

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Table 4.

Multivariate analysis of independent prognostic factors (COX regression model).

3.3.