1. VERIFIN, Finnish Institute for Verification of the Chemical Weapons Convention, Department of Chemistry; University of Helsinki; P.O. Box 55 FI Finland
2. Research and Development, Centre for Military Medicine; Finnish Defence Forces; P.O Box 50 FI Helsinki Finland
3. School of Pharmacy/Toxicology, Faculty of Health Sciences; University of Eastern Finland; P.O. Box 1627 FI Kuopio Finland