1. Departments of Oncology (R.V., G.E.D.), London, Ontario, Canada N6A 4L6
2. Departments of Biochemistry (R.V., G.E.D.), London, Ontario, Canada N6A 4L6
3. University of Western Ontario, and the London Regional Cancer Center (R.V., G.E.D.), London, Ontario, Canada N6A 4L6
4. Departments of Physiology (C.K.C.W., H.D., G.F.W.), London, Ontario, Canada N6A 4L6