1. Department of Biochemistry, University of Alberta, 474 Medical Sciences Building, Edmonton, Alberta T6G 2H7, Canada
2. Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta T6G 1Z2, Canada
3. Department of Physiology, University of Alberta, 725A Medical Sciences Building, Edmonton, Alberta T6G 2H7, Canada
4. c/o Victor Ling Laboratory, B.C. Cancer Research Centre, 600 West 10th Avenue, Vancouver, British Columbia, Canada V5Z 4E6
5. School of Biochemistry and Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K.