1. Department of Gerontology, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, P.R. China
2. Department of Neurology, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, P.R. China
3. Department of Endocrinology, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, P.R. China