1. Department of Chemistry, St. Louis University, 3501 Laclede Ave., St. Louis,
Missouri 63103, United States
2. Department of Biochemistry & Molecular Biology, Wayne State University, 540 E. Canfield Ave., Detroit, Michigan 48201, United States
3. Southwestern Illinois College, 2500 Carlyle Ave., Belleville, Illinois 62221,
United States
4. Department
of Chemistry, Washington University, One
Brookings Drive, St. Louis,
Missouri 63130, United States