1. SAIMLAL Department, Faculty of Pharmacy and Medicine, Laboratory of Electron Microscopy “Pietro Motta”, Sapienza University of Rome, Rome, Italy;
2. NESMOS Department, Faculty of Medicine and Psychology, Otolaryngology Clinic, Sapienza University of Rome, Rome, Italy;
3. NESMOS Department, Faculty of Medicine and Psychology, Neurosurgery Clinic, Sapienza University of Rome, Rome, Italy