1. School of Basic Medicine, Qingdao University, Ningxia Road, Qingdao 266071, PR China
2. Department of Pharmacy, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao 266000, China
3. Department of Psychiatry, Qingdao Mental Health Center, Qingdao 266032, China
4. Department of Positron Emission Tomography-Computed Tomography (PET-CT) Center, The Affiliated Hospital of Qingdao University, Qingdao 266000, China