1. Department of Geriatric Endocrinology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
2. Laboratory of Brain Stimulation and Biological Psychiatry, The Second People's Hospital of Huizhou, Huizhou, Guangdong 516001, P.R. China
3. Department of Psychiatry, Anhui Mental Health Center, Hefei, Anhui 230022, P.R. China