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population study (In population-based cohort studies, a sample, or even the entirety, of a defined population is selected for longitudinal assessment of exposure-outcome relations (Описание отсюда  oxfordjournals.org Savielia) | |||
| population-based study (vlad-and-slav) | |||
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популяционное исследование : 2 do fraz, 1 tematyki |
| Medycyna | 2 |