1. Baker Institute for Animal Health; Cornell University; Ithaca; NY
2. Department of Population Medicine & Diagnostic Sciences
3. Department of Clinical Sciences; College of Veterinary Medicine (Perkins); Cornell University; Ithaca; NY
4. Department of Veterinary Clinical Science; School of Veterinary Medicine and Animal Science; Univ Estadual Paulista (UNESP); Botucatu; SP; Brazil
5. Institut für Virologie; Freie Universität Berlin; Berlin; Germany