1 Department of Endocrinology, the Second Medical Center, Chinese PLA General Hospital, National Clinical Research Center for Geriatric Disease, Beijing 100000, China.
2 Beijing Physical Examination Center, Beijing 100000, China.
3 Department of Medical Record Management and Statistics, Beijing Jishuitan Hospital, Beijing 100000, China.
4 Department of Radiology, Beijing Jishuitan Hospital, Beijing 100000, China.
5 National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100000, China.
6 School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London SE1 7EH, United Kingdom.
7 Department of Sport and Exercise Sciences, Durham University, Durham 27704, United Kingdom.