1. Department of Paraclinical Sciences, Faculty of Veterinary Science University of Pretoria Pretoria South Africa
2. Department of Veterinary Anatomy, Faculty of Veterinary Science University of West Kordofan Gebaish Sudan
3. Department of Anatomy and Physiology, Faculty of Veterinary Science University of Pretoria Pretoria South Africa
4. Department of Veterinary Anatomy, Faculty of Veterinary Medicine University of Maiduguri Maiduguri Nigeria
5. Department of Production Animal Studies, Faculty of Veterinary Science University of Pretoria Pretoria South Africa
6. Department of Anatomy and Embryology, Faculty of Veterinary Medicine South Valley University Qena Egypt