1. Department of Geriatrics, Tongji Hospital, Tongji University, School of Medicine, Shanghai, China (mainland)
2. Department of Interventional and Vascular Surgery, Shanghai Tenth People’s Hospital, Tongji University, School of Medicine, Shanghai, China (mainland)
3. Division of General Surgery, Pudong New Area District Zhoupu Hospital, Shanghai, China (mainland)
4. Department of General Surgery, Yangpu Hospital Affiliated to Shanghai Tongji University School of Medicine, Shanghai, China (mainland)
5. Department of Neurology, Shanxi Academy of Medical Sciences, Shanxi Dayi Hospital, Taiyuan, Shanxi, China (mainland)