1. Department of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Beijing, China (mainland)
2. The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China (mainland)
3. Department of Pathology, Cancer Hospital Chinese Academy of Medical Sciences, Beijing, China (mainland)
4. Department of Urology, Beijing Hospital, National Center of Gerontology, Beijing, China (mainland)