1. Genzyme Corporation, Cambridge, MA 02139
2. Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114
3. Lahey Medical Center, Burlington, MA 01805
4. Boston Medical Center/Boston University School of Medicine, Boston, MA 02118
5. Rush-Presbyterian Hospital, Chicago, IL
6. Brigham and Women's Hospital/Harvard Medical School, Boston, MA 02115
7. Primedica Corporation, Rockville, MD 20850
8. Diacrin, Inc., Charlestown, MA 02129
9. McLean Hospital/Harvard Medical School, Belmont, MA 02178