1. Department of Histology-Embryology, Faculty of Medicine, İnönü University, Malatya, Turkey
2. Department of Histology-Embryology, Faculty of Medicine, Okan University, İstanbul, Turkey
3. Department of Histology-Embryology, Faculty of Medicine, Adıyaman University, Adıyaman, Turkey
4. Department of Pediatrics, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
5. Department of Human Anatomy, University of Turin, Turin, Italy