1. MedVet New Orleans, Louisiana and MedVet Mandeville, Louisiana USA
2. Department of Production Animal Studies, Faculty of Veterinary Science University of Pretoria Onderstepoort South Africa
3. Department of Veterinary Services Mississippi Aquarium Gulfport Mississippi USA
4. Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences College of Veterinary Medicine and Biomedical Sciences, Texas A&M University College Station Texas USA