. 2013 Aug 14;8(8):e71334. doi: 10.1371/journal.pone.0071334
© 2013 Murrell et al
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
Figure 3. Logical rationale for collecting the data presented.
