1. Graduate School Neurosciences Amsterdam (F.P.M.K., J.-N.Z., C.W.P., M.A.H., D.F.S.), Netherlands Institute for Brain Research, 1105 AZ Amsterdam ZO, The Netherlands
2. Anhui Geriatric Institute (J.-N.Z.), The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032 China
3. Department of Endocrinology (L.J.G.G.), Free University Hospital, 1007 MB Amsterdam, The Netherlands