Rijksinstituut voor Volksgezondheid en Milieu Long sleep duration is associated with lower cognitive function among middle-age adults - the Doetinchem Cohort Study | RIVM Jaar: 2018 Long sleep duration is associated with lower cognitive function among middle-age adults - the Doetinchem Cohort Study | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON