1. Department of Health Statistics, School of Public Health, Chongqing Medical University,Chongqing, China
2. Department of Dermatology, The 13th People's Hospital of Chongqing (The Geriatric Hospital of Chongqing), Chongqing, China
3. Department of Dermatology, The 4th People's Hospital of Chongqing, Chongqing, China
4. Department of Dermatology, The People's Hospital of Chongqing, Chongqing, China
5. Department of Dermatology, Yong Chuan Hospital at Chongqing Medical University, Chongqing, China
6. Department of Physiology, Basic Department at Chongqing Medical University, Chongqing, China
7. Laboratory Department, The 13th People's Hospital of Chongqing (The Geriatric Hospital of Chongqing), Chongqing, China
8. Department of Community, The 13th People's Hospital of Chongqing (The Geriatric Hospital of Chongqing), Chongqing, China
9. Department of Geriatrics, The 13th People's Hospital of Chongqing (The Geriatric Hospital of Chongqing), Chongqing, China
10. Department of Medical Education, The 13th People's Hospital of Chongqing (The Geriatric Hospital of Chongqing), Chongqing, China