1. CBRN & Chemical Toxicological Research Group, Centre for Radiation, Chemical and Environmental Hazards Health Protection Agency (now Public Health England) Chilton UK
2. School of Biosciences University of Birmingham Edgbaston UK
3. Research Centre for Topical Drug Delivery and Toxicology University of Hertfordshire Hatfield UK
4. Defence Science & Technology Laboratory Porton UK
5. Medical Toxicology Branch Analytical Toxicology Division, U.S. Army Medical Research Institute of Chemical Defense Aberdeen Proving Ground MD 21010 USA