1. Department of Clinical Medicine, Weifang Medical University , Weifang, Shandong 261053 , China
2. Department of Neurology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University , Weihai, Shandong 264200 , China
3. Department of Neurology, The First Affiliated Hospital of Jinzhou Medical University , Jinzhou, Liaoning 121017 , China
4. Department of Endocrinology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University , Weihai, Shandong 264200 , China