Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.|Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.|Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.