1. Department of Chemical and Biological Engineering; Colorado State University; Fort Collins Colorado 80523-1370
2. Department of Emergency Medicine; University of Colorado School of Medicine; 12401 E. 17th Avenue Campus Box B-215 Aurora CO 80045
3. Rocky Mountain Poison and Drug Center; Denver CO 80204
4. School of Biomedical Engineering; Colorado State University; Fort Collins Colorado 80523-1376 USA