From the Clinical Trials Research Unit (V.L.F., C.M.M.L.), Faculty of Medicine and Health Sciences, University of Auckland, New Zealand; Department of Neurology (G.J.E.R., A.A., J.v.G.), University Hospital Utrecht, Utrecht, The Netherlands; Julius Center for Health Sciences and Primary Care University Department (A.A.), University Medical Center Utrecht, The Netherlands; Clinical Trials Service Unit and Epidemiological Studies Unit (D.A.B.), Nuffield Department of Clinical Medicine, University of... (At 2005-12)