1. Microsurgical Laboratory, Department of Surgery, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
2. Neurosurgical Simulation Research and Training Centre, Department of Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada
3. Surgical Skills Centre, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
4. National Neuroscience Institute, Department of Neurosurgery, King Fahad Medical City, Riyadh, Saudi Arabia