Neither socioeconomic status, latrine density, population density nor study year had a significant influence on disease risk.
社会经济状况、公厕密度、人口密度以及研究年份都未对患病风险产生重大影响。
Neither socioeconomic status, latrine density, population density nor study year had a significant influence on disease risk.
社会经济状况、公厕密度、人口密度以及研究年份都未对患病风险产生重大影响。
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