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2013-05-23 12:21
求翻译：First, it has long been argued that the endogeneity problem between insurance decisions and production choices always makes the causal effect hard to be identified correctly. In this study, the insurance choices and production security behaviors (such as vaccine costs and sanitation costs) were jointly determined by so是什么意思？ 待解决
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First, it has long been argued that the endogeneity problem between insurance decisions and production choices always makes the causal effect hard to be identified correctly. In this study, the insurance choices and production security behaviors (such as vaccine costs and sanitation costs) were jointly determined by so
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