Open Access Research article

The non-linear risk of mortality by income level in a healthy population: US National Health and Nutrition Examination Survey mortality follow-up cohort, 1988–2001

David H Rehkopf*, Lisa F Berkman, Brent Coull and Nancy Krieger

BMC Public Health 2008, 8:383 doi:10.1186/1471-2458-8-383

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