. 2013 Aug 29;23(1):24–28. doi: 10.1159/000354297
Copyright © 2013 by S. Karger AG, Basel
This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) (www.karger.com/OA-license), applicable to the online version of the article only. Distribution permitted for non-commercial purposes only.