. 2017 May 4;7(1):136–142. doi: 10.1159/000458521
Copyright © 2017 by S. Karger AG, Basel
This article is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND) (http://www.karger.com/Services/OpenAccessLicense). Usage and distribution for commercial purposes as well as any distribution of modified material requires written permission.
Fig. 1.
Study flowchart.