1. The Platelet and Neutrophil Immunology Laboratory, BloodCenter of Wisconsin, Milwaukee, WI;
2. Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY;
3. Department of Internal Medicine, Yale University School of Medicine, New Haven, CT;
4. Division of Hematology/Oncology, New York Presbyterian Hospital, New York, NY; and
5. Blood Research Institute, BloodCenter of Wisconsin, and
6. Department of Medicine, Medical College of Wisconsin, Milwaukee, WI