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. 2010 Feb 16;4(2):e601. doi: 10.1371/journal.pntd.0000601

Figure 1. The map of the study areas in Heilongjiang Province, China.

Figure 1

The study areas include five villages in heavy endemic areas of clonorchiasis in Zhaoyuan, and two villages in moderate endemic areas in Hailin and Ningan. MT2, mass treatment every 2 year; MT1, mass treatment every year; ST1, selective treatment every year; ST1R, selective treatment and reservoir control every year; ST6M, selective treatment every 6 month; ST2-mod, selective treatment every 2 year; ST1-mod, selective treatment every year.