1. Guangzhou Blood Center; Guangzhou Guangdong China
2. The Key Medical Disciplines and Specialties Program of Guangzhou; Guangdong China
3. Department of Transfusion Medicine; School of Biotechnology; Southern Medical University; Guangzhou Guangdong China
4. Faculty of Infectious Diseases; Department of Epidemiology and Biostatistics; University of Georgia; Athens GA USA
5. Department of Epidemiology; Bloomberg School of Public Health; Johns Hopkins University; Baltimore MD USA