1. National Center for Clinical Laboratories, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology, Beijing,P.R. China
2. Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, Beijing,P.R. China
3. The First Clinical Medical College, Capital Medical University, Beijing, P.R. China
4. National Center for Clinical Laboratories, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P.R. China
5. Department of Cardiology, Xi’an No.1 hospital, Xi’an, Shaanxi,P.R. China
6. Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China
7. Clinical Research Academy, Peking University Shenzhen Hospital, Peking University, Shenzhen, Guangdong, P.R. China