J. A. Bond, Ph.D., DABT, 25 Rabbitbrush Road, Santa Fe, NM 87506-7782, USA, Fax: +1 505 988 1298
M. S. Denison, Ph.D., Department of Environmental Toxicology, College of Agricultural & Environmental Sciences, University of California at Davis, 4138 Meyer Hall, Davis, CA 95616-8501, USA, Fax: +1 916 752 3394