1. Department of Emergency Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
2. Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD, USA
3. Brooke Army Medical Center, Ft Sam Houston, San Antonio, TX, USA
4. Medical Toxicology Division, Biochemistry and Physiology Branch, US Army Medical Research Institute of Chemical Defense, Aberdeen Proving Ground, MD, USA