Bruggimann, L.; Service of Neurology, University Hospital of Lausanne, Switzerland, Clinic of Geriatric Psychiatry, University Hospitals of Geneva, Switzerland, Service of Neurology, University Hospital of Lausanne, Bugnon 46, 1011 Lausanne, Switzerland
Annoni, J. M.; Service of Neurology, University Hospital of Lausanne, Switzerland
Staub, F.; Service of Neurology, University Hospital of Lausanne, Switzerland
Von Steinbüchel, N.; Clinic of Geriatric Psychiatry, University Hospitals of Geneva, Switzerland
Bogousslavsky, J.; Service of Neurology, University Hospital of Lausanne, Switzerland