1. Department of TheriogenologyFaculty of Veterinary Medicine, Assiut UniversityAssiut Egypt
2. Graduate School of Animal and Food HygieneObihiro University of Agriculture and Veterinary MedicineObihiro Japan
3. Department of Anatomy, Embryology and Histology, Faculty of Veterinary MedicineAssiut UniversityAssiut Egypt
4. Department of Gynecology, Obstetrics and Reproductive HealthBangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur Bangladesh