1. Department of Transfusion Medicine; Warren G. Magnuson Clinical Center; National Institutes of Health; Bethesda Maryland
2. National Institute of Diagnostics and Vaccine Development in Infectious Disease; School of Public Health; Xiamen University; Xiamen Fujian China
3. Department of Laboratory Medicine; Center for Cancer and Blood Diseases; Children's National Medical Center
4. Department of Pediatrics; School of Medicine and Health Sciences; George Washington University; Washington DC