1. Thorndike Memorial Laboratory, Second and Fourth (Harvard) Medical Services, Boston City Hospital , Boston, Massachusetts 02118 , the , Boston, Massachusetts 02115 , the , Cambridge, England and the , Boston, Massachusetts 02115
2. Blood Grouping Laboratory and the Department of Medicine, Children's Hospital Medical Center , Boston, Massachusetts 02118 , the , Boston, Massachusetts 02115 , the , Cambridge, England and the , Boston, Massachusetts 02115
3. Department of Pathology, University of Cambridge , Boston, Massachusetts 02118 , the , Boston, Massachusetts 02115 , the , Cambridge, England and the , Boston, Massachusetts 02115
4. Departments of Pediatrics and Medicine, Harvard Medical School , Boston, Massachusetts 02118 , the , Boston, Massachusetts 02115 , the , Cambridge, England and the , Boston, Massachusetts 02115