1. Department of Biology and South Texas Center for Emerging Infectious Diseases , The University of Texas at San Antonio, San Antonio, Texas 78249, United States
2. Departamento de Ciencias Basicas, Division de Ciencia de la Salud, Universidad de Monterrey, San Pedro Garza García, Nuevo León 66238, México
3. Department of Applied Physics and Materials Science, Northern Arizona University, 700 South Osborne Drive, Flagstaff, Arizona 86011, United States