de Jong, NVerhagen, HrivmWolfs, MCJOcke, MCrivmKlungel, OHLeufkens, HGM2025-03-192025-03-1920071751015210.1111/j.1467-789X.2007.000370.xhttps://rivm.openrepository.com/handle/10029/642158Functional foods: the case for closer evaluationArticleBrit Med J 2007; 334(7602):1037-92025-03-19