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FastStats - Life Expectancy - Centers for Disease Control and …
Life Expectancy in the U.S. Dropped for the Second Year in a Row …
Life expectancy - Wikipedia
Life span | Definition, Measurement, & Facts | Britannica
Life Expectancy - Our World in Data
How to Calculate Your Life Expectancy | Retirement | U.S. News
Life span Definition & Meaning - Merriam-Webster
Life tables - World Health Organization (WHO)
Differences Between Human Life Span and Expectancy
Life span - Aging, Genetics, Longevity | Britannica