1. Division of Hematology/Oncology, Department of Pediatrics, University of Illinois College of Medicine, Chicago, Illinois.
2. Department of Oral Maxillofacial Surgery, University of Illinois College of Medicine, Chicago, Illinois.
3. Department of Oral and Maxillofacial Surgery, University of Buffalo School of Dental Medicine, Buffalo, New York.
4. Department of Pathology, University of Illinois College of Medicine, Chicago, Illinois.