Louise L. Southwood, BVSc, PhD, DACVS, DACVECCAssociate Professor of Large Animal Emergency and Critical CareDepartment of Clinical Studies – New Bolton CenterSchool of Veterinary MedicineUniversity of Pennsylvania, Philadelphia, USAPamela A. Wilkins, DVM, MS, PhD, DACVIM, DACVECCProfessor, Veterinary Clinical MedicineSection Head, Equine Medicine and SurgeryCollege of Veterinary MedicineUniversity of Illinois at Urbana-Champaign, USA