. 2016 Aug 11;2016:6195494. doi: 10.1155/2016/6195494
Copyright © 2016 Rudruidee Karnchanasorn et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Sampling scheme.