1. National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, Chengdu, China.
2. The Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu, China.
3. Collaborative Innovation Center of Sichuan for Elderly Care and Health, Chengdu Medical College, Chengdu, China.
4. Department of Urinary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China.
5. Department of Urology, Chengdu Sixth People's Hospital, Chengdu, China.
6. Sichuan Engineering Research Institute of Chi Ding Sheng Tong, Chengdu, China.