1. Department of Endocrinology and Metabolism, Diabetes Care & Research Center, Nanjing Medical University Affiliated Geriatric Hospital, Jiangsu Province Geriatric Hospital, Jiangsu Province Institute of Geriatrics, Nanjing, P.R. China.
2. Department of Endocrinology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, P.R. China.
3. Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, P.R. China.
4. School of Public Health, Nanjing Medical University, Nanjing, P.R. China.