1. Department of Clinical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR, USA
2. College of Veterinary Medicine, Oregon State University, Corvallis, OR, USA
3. Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR, USA
4. Department of Statistics, Oklahoma State University, Stillwater, OK, USA
5. Department of Chemistry, Oregon State University, Corvallis, OR, USA