. 2008 Dec;16(4):219–225. doi: 10.5455/aim.2008.16.219-225
© 2008 AVICENA
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
FIGURE 2.
Types of research