1. Joint Vaccine Acquisition Program, Medical Countermeasure Systems, and Battelle, Fort Detrick, Maryland, USA. Janice.m.rusnak.ctr@mail.mil
2. United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, USA
3. Department of Statistics, Battelle, Columbus, Ohio, USA
4. Joint Vaccine Acquisition Program, Medical Countermeasure Systems, Fort Detrick, Maryland, USA