Effects of Prenatal Care on Birth Outcomes: Reconciling a Messy Literature
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Research on the effects of prenatal care on birth outcomes has produced a patchwork of findings that are not easily summarized. Studies have used varying definitions of prenatal care, leading to estimates that are difficult to compare. The identification of causal effects is particularly challenging
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美国国家经济研究局创建时间：
2018-08-01
