BOSTON
† Assistant professor of pathology, Harvard Medical School; pathologist-in-chief and chairman, Division of Laboratories and Research, The Children's Medical Center, Boston.
‡ Assistant professor of pediatrics, Harvard Medical School; hematologist and physician to The Children's Medical Center, Boston.
§ Research fellow in pathology and tumor research, The Children's Medical Center, Boston.
¶ Research fellow in pathology and tumor research, The Children's Medical Center, Boston.
∥ Research fellow in pediatrics, The Children's Medical Center, Boston.