1. National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, North Carolina 27615, United States
2. US Department of Agriculture─Agricultural Research Service, 1100 Robert E. Lee Blvd., New Orleans, Louisiana 70122, United States
3. Department of Biochemistry and Molecular Biology, Institute for Human Infections and Immunity, University of Texas Medical Branch, 301 University Blvd., Galveston, Texas 77555, United States
4. University of California Davis School of Medicine, 2315 Stockton Blvd., Sacramento, California 95817, United States