1. Veterans Administration West Side Hospital and the Departments of Medicine, Biochemistry, and Microbiology, University of Illinois Abraham Lincoln School of Medicine, Chicago, Ill.
2. Veterans Administration West Side Hospital and University of Illinois Abraham Lincoln School of Medicine, Chicago, Ill.
3. Veterans Administration West Side Hospital, Chicago, Ill.
4. Division of Hematology, Cook County Hospital and Professor of Medicine, University of Illinois Abraham Lincoln School of Medicine, Chicago, Ill.
5. Veterans Administration West Side Hospital; and Chief, Hematology Section, Department of Medicine; and Professor of Medicine, University of Illinois Abraham Lincoln School of Medicine, Chicago, Ill.