1. Gaspar Casal Foundation, Madrid, Spain
2. Department of Neurology, University Hospital “La Paz”, Madrid, Spain
3. Department of Neurology, University Hospital “12 de Octubre”, Madrid, Spain
4. Department of Neurosciences, Unitat de Valoració de la Memòria i les Demències, Hospital Santa Caterina, Girona, Spain
5. Pfizer Global Pharmaceuticals, New York, New York, USA
6. Health Outcomes Research Department, Medical Unit, Pfizer España, Alcobendas (Madrid), Spain