1 Department of Neurological Surgery, Weill Cornell Brain and Spine Center, Weill Cornell Medicine, New York-Presbyterian Hospital, New York, New York, USA.
2 King Edward Medical University, Lahore, Pakistan.
3 Wolfson Medical School, University of Glasgow, Scotland, United Kingdom. Electronic address: mohammad.ashraf@glasgow.ac.uk.
4 Department of Neurosurgery, Neurosurgery Clinic, Birgunj, Nepal. Electronic address: trozexa@gmail.com.