1. Department of Neurosurgery, Hue University Hospital, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
2. Department of Neurosurgery, Xuyen A Hospital, Ho Chi Minh City, Vietnam
3. Division of Orthopedics, Central Hospital of University of Montreal, University of Montreal, Montreal, Canada
4. Department of Neurosurgery, Vinmec Central Park International Hospital, Vinmec Healthcare System, Ho Chi Minh city, Vietnam