| Affiliation: | 1. Department of Endocrinology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, People's Republic of China;2. Department of Oncology, The Fifth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, People's Republic of China;3. Chaoyang 1st Sanitarium for Retired Cadres of Beijing Garrison of the Chinese PLA, Beijing, People's Republic of China;4. Department of Nephrology, The Chinese PLA Strategic Support Force Characteristic Medical Center, Beijing, People's Republic of China |
