. 2013 Jan 28;34(1):2–10. doi: 10.4082/kjfm.2013.34.1.2
Copyright © 2013 The Korean Academy of Family Medicine
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 noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Flow sheet of study selection.