. 2015 Jul 20;2:10.3402/ecrj.v2.26375. doi: 10.3402/ecrj.v2.26375
© 2015 Helena Backman et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license.
Fig. 1.
Study flow chart.