Rijksinstituut voor Volksgezondheid en Milieu Dispisitional optimism and the risk of depressive symptoms during 15 years of follow-up: the Zutphen Elderly Study | RIVM Jaar: 2006 Dispisitional optimism and the risk of depressive symptoms during 15 years of follow-up: the Zutphen Elderly Study | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON