1. Department of Epidemiology and Health Statistics, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an, China
2. Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
3. Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
4. Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
5. Department of Geriatric Medicine, The University of Auckland, Auckland, New Zealand
6. School of Public Health, Xi’an Medical College, Xi'an, China
7. Centre for Health Economics, University of York, Heslington, United Kingdom