About the Authors
Institute for Human Infections and Immunity, Center for Biodefense and Emerging Infectious Diseases and Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
Sealy Center for Preventative Medicine and Preventative Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: NLF SCW. Performed the experiments: NLF MG RLS. Analyzed the data: NLF HS. Wrote the paper: NLF SCW.