An introduction to epidemiology for health professionals 2026-02-15T14:12:46+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Olsen, Jrn (Springer series on epidemiology and health, 2010)