1. Department of Geriatrics, Tongji Hospital Affiliated to The Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei People's Republic of China
2. Department of Geriatrics Zhongnan Hospital of Wuhan University Wuhan Hubei People's Republic of China
3. Department of Geriatrics Beijing Hospital Beijing People's Republic of China
4. Department of Thoracic Surgery, Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei People's Republic of China
5. Department of Pediatrics, Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei People's Republic of China
6. Department of Gastroenterology, Liyuan Hospital Affiliated to The Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei People's Republic of China
7. Department of Geriatrics, Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei People's Republic of China