1 Animal and Rangeland Sciences, Oregon State University, 112 Withycombe Hall, Corvallis, OR 97331, USA. Electronic address: michelle.kutzler@oregonstate.edu.
2 Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, PO Box 422, Rushford, MN 55971, USA. Electronic address: wolfx006@umn.edu.