1. Laboratorio de Patología Veterinaria (Histopatovet) Heredia Costa Rica
2. Division of Comparative Pathology Tulane National Primate Research Center Covington Louisiana USA
3. Southwest National Primate Research Center at the Texas Biomedical Research Institute San Antonio Texas USA
4. Antech Diagnostics, Mars Petcare Science & Diagnostics Fountain Valley California USA
5. Department of Pathobiology, College of Veterinary Medicine Auburn University Auburn Alabama USA