. 2010 Nov 12;54:10.3402/fnr.v54i0.5311. doi: 10.3402/fnr.v54i0.5311
© 2010 Anne Dahl Lassen et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.