. 2016 Jul 28;101(2):239–251. doi: 10.1097/TP.0000000000001438
Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.
TABLE 3.
Levels of evidence based on the Oxford Centre for Evidence-Based Medicine
