1. Paul G. Allen School for Global Animal Health, Washington State University, Pullman, Washington, USA
2. Animal Diseases Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, Washington, USA
3. Programa de Salud Animal, INIFAP-CIRGOC, La Posta, Veracruz, México
4. Universidad Autónoma de Querétaro, Campus Juriquilla, México