1. Biological Defense and Health Security, University of Nebraska Medical Center, Omaha, Nebraska, USA;
2. National Strategic Research Institute, Omaha, Nebraska, USA;
3. Sandia National Laboratories, Albuquerque, New Mexico, USA;
4. Battelle Memorial Institute, Columbus, Ohio, USA
5. Defence Science and Technology Laboratory, Salisbury, United Kingdom
6. Chemical and Environmental Engineering, University of California Riverside, Riverside, California, USA