1. P4–403: Serum 25‐hydroxyvitamin D is associated with cognitive executive function in Dutch prefrail and frail elderly. (1st July 2013) Authors: Brouwer‐Brolsma, Elske; van de Rest, Ondine; Tieland, Michael; van der Zwaluw, Nikita; Steegenga, Wilma; Adam, Jos; van Loon, Luc; Feskens, Edith; de Groot, Lisette Journal: Alzheimer's & dementia Issue: Volume 9:Supplement 4S(2013)Part 22 Page Start: P883 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗