1. a Department of Chemistry , The University of Arizona , Tucson, AZ, USA
2. b Department of Cell and Molecular Biology , University of Hawaii at Manoa , Honolulu, HI, USA
3. c Department of Chemistry , University at Albany, SUNY , Albany, NY, USA
4. d Department of Chemistry , University of Massachusetts , Amherst, MA, USA
5. e Laboratory of Cancer Prevention, Center for Cancer Research , National Cancer Institute , Bethesda, MD, USA
6. f Department of Chemistry , University of Calgary , Calgary, Alberta, Canada
7. g Department of Geological Sciences , University of Saskatchewan , Saskatoon, Saskatchewan, Canada
8. h Department of Biochemistry , University of Nebraska , Lincoln, NE, USA
9. i Center of Molecular and Macromolecular Sciences , Polish Academy of Sciences , Lodz, Poland
10. j Department of Biological Sciences , University of Calgary , Calgary, Alberta, Canada