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Subjects
- Age Factors1
- Aged -- psychology[remove]1
- Aging -- psychology1
- Employment -- statistics & numerical data1
- Happiness1
- Health Status1
- Humans1
- Income1
- Life Expectancy1
- Middle Aged -- psychology1
- Quality of Life1
- Retirement -- economics1
- Retirement -- statistics & numerical data1
- Time Factors1
- United States1
- Work -- psychology1
- Work -- statistics & numerical data1