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Diminishing returns to aggregate level studies

¹National Primary Care Research and Development Centre, University of York, York Y010 5DD. hg8@york.ac.uk

BMJ (Clinical Research Ed.)

|November 30, 1999

Summary

No abstract available in PubMed .

Keywords:

Americas Biology Demographic Factors Developed Countries Economic Factors Income Income Distribution Mortality North America Northern America Population Population Dynamics Risk Factors Socioeconomic Factors Summary Report United States

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