. 2017 Apr 27;3(2):121–132. doi: 10.3233/BLC-170108
IOS Press and the authors. All rights reserved
This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial (CC BY-NC 4.0) License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fig.1.
Flow diagram following PRISMA statement.