. 2019 Mar 7;2019:6173412. doi: 10.1155/2019/6173412
Copyright © 2019 Hsiang-Chun Lai 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.
Flow chart of the search processes.