1. University of Health Sciences Turkey, Prof. Dr. Cemil Taşcıoğlu City Hospital, Clinic of Neurosurgery, İstanbul, Turkey

2. Kızıltepe State Hospital, Clinic of Neurosurgery, Mardin, Turkey

3. Kızıltepe State Hospital, Clinic of Anesthesiology and Intensive Care, Mardin, Turkey

4. University of Health Sciences Turkey, Prof. Dr. Cemil Taşcıoğlu State Hospital, Clinic of Anesthesiology and Intensive Care, İstanbul, Turkey

5. University of Health Sciences Turkey, Prof. Dr. Cemil Taşcıoğlu State Hospital Clinic of Otorhinolaryngology-Head and Neck Surgery, İstanbul, Turkey