期刊
AMERICAN ECONOMIC REVIEW
卷 100, 期 2, 页码 234-238出版社
AMER ECONOMIC ASSOC
DOI: 10.1257/aer.100.2.234
关键词
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类别
资金
- NICHD NIH HHS [R01 HD054702, R01 HD054702-03] Funding Source: Medline