1. Department of Neurosurgery, University College of Medical Sciences and GTB Hospital, Delhi, India
2. Department of Neurosurgery, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
3. Department of Neurosurgery, Trauma and Gamma Knief Center, Cannizaro Hospital, Catania, Italy
4. Neurosurgery Clinic, Birgunj, Nepal