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  Indian J Med Microbiol
 

Figure 2: The age distribution in the two study areas, Cam Thuy (more developed community, n = 600) and Trieu Trach (less developed community, n = 600).

Figure 2: The age distribution in the two study areas, Cam Thuy (more developed community, n = 600) and Trieu Trach (less developed community, n = 600).