. 2017 Sep 23;8(53):91568–91576. doi: 10.18632/oncotarget.21229
Copyright: © 2017 Yuan et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Figure 1. 15 counties conducted in the research.
