1. Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
2. Department of Chemistry, Simon Fraser University, Burnaby V5A 156, BC, Canada
3. Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, Virginia 22807, United States
4. Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, Pennsylvania 16802, United States
5. Department of Chemistry, University of Bergen, Bergen 5020, Norway