title: Reply to colleague Regal.
authors.affiliation: University medical center Groningen, Groningen, the Netherlands.
authors.forename: Elske
authors.initials: E
authors.lastname: de Lange
mesh_terms: D003693:Delirium / Q000453:epidemiology*; D006699:Home Care Services / Q000706:statistics & numerical data*; D006801:Humans; D008134:Long-Term Care / Q000706:statistics & numerical data*