. 2011 Aug 2;4:10.3402/gha.v4i0.7117. doi: 10.3402/gha.v4i0.7117
© 2011 Catherine Abbo
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.
Fig. 2.
Showing summary of methods used in the the studies.