1. Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
2. Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322, USA
3. Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University, Atlanta, GA 30322, USA
4. Puget Sound Blood Center Research Institute, Seattle, WA 98102, USA