1. Beijing Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China.
2. Department of Public Health, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia.
3. Department of Pathophysiology, Peking Union Medical College, China Academy of Medical Sciences, Beijing, China.
4. Department of International Inpatient, Institute of Health Management, Chinese PLA General Hospital, Beijing, China.