Article Metrics

CrossRef Citations:
Total Statistics:

Full-Text HTML Views: 643
Abstract HTML Views: 706
PDF Downloads: 270
Total Views/Downloads: 1619
Unique Statistics:

Full-Text HTML Views: 401
Abstract HTML Views: 398
PDF Downloads: 168
Total Views/Downloads: 967

Copyright: 2013
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.