NCHS - Infant Mortality Rates, by Race: United States, 1915-2013
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资源简介：
All birth data by race before 1980 are based on race of the child; starting in 1980, birth data by race are based on race of the mother. Birth data are used to calculate infant mortality rate. https://www.cdc.gov/nchs/data-visualization/mortality-trends/
创建时间：
2015-07-14
