1. Gastrointestinal Laboratory, Department of Small Animal Clinical SciencesCollege of Veterinary Medicine and Biomedical Sciences, Texas A&M University College Station Texas
2. Clinic of Medicine, Faculty of Veterinary MedicineUniversity of Thessaly Karditsa Greece
3. Laboratory for Cardiovascular Chemistry, Department of ChemistryTexas A&M University College Station Texas
4. Department of Poultry Science and Graduate Faculty of NutritionTexas A&M University College Station Texas