1 Department of Veterinary Clinical Medicine, College of Veterinary Medicine University of Illinois at Urbana-Champaign, 1008 West Hazelwood Drive, MC 004, Urbana, IL 61802, USA. Electronic address: taharper@illinois.edu.
2 Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, 240 Wise Center Drive, Mississippi State, MS 39762, USA. Electronic address: ryan.butler@msstate.edu.