1. Department of Chemistry, Brooklyn College of The City University of New York, Brooklyn, New York 11210
2. Department of Chemistry and Biochemistry, Queens College of The City University of New York, Flushing, New York 11367
3. Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada R3E 0W3
4. Department of Chemistry, Hunter College of The City University of New York, New York, New York 10065