The third age, the Third World and the 21st century.
Diczfalusy
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Department of Reproductive Endocrinology, Karolinska Institutet, Stockholm, Sweden.
D000375:Aging; D002423:Cause of Death; D005544:Forecasting; D005102:Health Expenditures / Q000706:statistics & numerical data; D006801:Humans; D008017:Life Expectancy / Q000639:trends*; D009026:Mortality; D011158:Population Growth