1. University of Massachusetts at Boston Boston Massachusetts
2. Institute of Blood TransfusionChinese Academy of Medical Sciences Chengdu P. R. China
3. West China School of Public HealthSichuan University Chengdu P. R. China
4. The Johns Hopkins Medical Institutions Baltimore Maryland
5. Chongqing Blood Center Chongqing China
6. Guangxi Blood Center Liuzhou P. R. China
7. Luoyang Blood Center Luoyang P. R. China
8. Mianyang Blood Center Mianyang China
9. Urumqi Blood Center Urumqi P. R. China
10. RTI International Rockville Maryland
11. National Heart, Lung, and Blood Institute Bethesda Maryland
12. Stanford University Stanford California