Population based study of social and productive activities as predictors of survival among elderly Americans.
| Autor: | Glass TA, de Leon CM, Marottoli RA, Berkman LF |
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| Zdroj: | BMJ: British Medical Journal (International Edition); 08/21/99, Vol. 319 Issue 7208, p478-483, 6p |
| Databáze: | Complementary Index |
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