1. Department of Neurosurgery West China Hospital Sichuan University Chengdu China
2. The George Institute for Global Health China Beijing China
3. The George Institute for Global Health, Faculty of Medicine, The University of New South Wales (UNSW) Sydney New South Wales Australia
4. Department of Neurosurgery Nanjing Drum Tower Hospital The Affiliated Hospital of Nanjing University Medical School Nanjing China