. 2004 Aug 11;4:22. doi: 10.1186/1471-244X-4-22
Copyright © 2004 Leppämäki et al; licensee BioMed Central Ltd.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Study protocol