1. Department of Anatomy; Radboud University Medical Center; Centre for Medical Neuroscience; Donders Institute for Brain; Cognition & Behaviour; Preclinical Imaging Centre PRIME; Nijmegen The Netherlands
2. European Institute for Molecular Imaging (EIMI); Westfälische Wilhelms University Münster; Münster Germany
3. Department of Geriatrics; Johanniter Hospital; Evangelische Kliniken; Bonn Germany