1. Department of Chemistry Georgia State University 50 Decatur Street SE Atlanta GA 30303 USA
2. Cancer Research (UK) Drug–DNA Interactions Research Group UCL Cancer Institute Gower Street London WC1E 6BT UK
3. Department of Chemistry Hope College 141 E 12th Street Holland MI 49423 USA
4. Current address: M. J. Murdock Charitable Trust 703 Broadway Street, Suite 710 Vancouver WA 98660 USA