Introduction: This study examined the association between California school nutrition policies and population-level trends in childhood overweight/obesity by levels of urbanicity.

中文翻译：

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中学生的竞争性食品和饮料政策与肥胖：加州城市化的变异性

简介：本研究按城市化程度调查了加州学校营养政策与儿童超重/肥胖人口水平趋势之间的关联。