1. Department od Skull Base Surgery, Republican Specialized Scientific Practical Medical Center of Neurosurgery, Republic of Uzbekistan, Tashkent, Uzbekistan
2. Department of Neurosurgery, Center of Neuroendoscopy, Nagoya Daini Red Cross Hospital, Nagoya, Japan
3. Department of Neurosurgery, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
4. Deparment of Neurosurgery, Fujita Health University Banbuntane Hospital, Nagoya, Japan