. 2017 Oct 3;24:35. doi: 10.1051/parasite/2017036
© J. Zhang et al., published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Location of 20 large cities in China selected for sampling.