1. Nuclear Medicine Service, Virgen de la Victoria University Hospital, 29010 Málaga, Spain
2. Neurology Service, Reina Sofia University Hospital, 14004 Cordoba, Spain
3. Maimónides Biomedical Research Institute of Córdoba (IMIBIC), 14004 Córdoba, Spain
4. Clinical Analyses Service, Reina Sofía University Hospital, 14004 Córdoba, Spain
5. Department of Biochemistry and Molecular Biology, Universidad of Córdoba, 14071 Córdoba, Spain