Authors: Domenico Inzitari; Giovanni Pracucci; Anna Poggesi; Giovanna Carlucci; Frederik Barkhof; Hugues Chabriat; Timo Erkinjuntti; Franz Fazekas; José M Ferro; Michael Hennerici; Peter Langhorne; John O'Brien; Philip Scheltens; Marieke C Visser; Lars-Olof Wahlund; Gunhild Waldemar; Anders Wallin; Leonardo Pantoni Journal: BMJ Date: 2009-07-06