1. Perception Vision Medical Technologies Company, Ltd., Guangzhou, China
2. Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
3. Department of General practice, Xiangya Hospital, Central South University, Changsha, China
4. Department of Nursing, Xiangya Hospital, Central South University, Changsha, China
5. School of Computer Science and Engineering, Central South University, Changsha, China
6. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China