Affiliation: | 1. McPhail Equine Performance Center, Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, USA;2. Wilhite & Frees Equine Hospital, Peculiar, Missouri, USA;3. Hagyard Equine Medical Institute, Lexington, Kentucky, USA;4. West End Equine Veterinary Services, Inc., Delano, Minnesota, USA;5. Department of Population Health and Reproduction, University of California Davis, Davis, California, USA |