. 2014 Aug 1;4:42. doi: 10.1186/s13550-014-0042-6
Copyright © 2014 Okada et al.; licensee Springer
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.