1. Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China.
2. Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China.
3. Community Medicine Department, Faculty of Medicine and Health Sciences, University of Dongola, Sudan.
4. Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
5. Department of Neurology, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
6. Department of Haematology, Beijing Hospital, Beijing, China.
7. Global Health and Genomics, School of Medical and Health Sciences, Edith Cowan University, Perth, Australia.