1. Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4
2. Department of Biochemistry and Molecular Biology, Faculty of MedicineUniversity of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
3. AUC Solutions, Houston, Texas 77494, United States
4. Department of Chemistry, University of Montana, Missoula, Montana 59812, United States