June 2001 | Massachusetts General Hospital Neurosurgery & Neurology Ground rounds |
May, 2002 | Mayo Graduate School of Medicine |
June 2007 | Harvour view Medical Center, University of Washington, Department of Neurosurgery |
June 2013 | University of Washington, Department of Neurosurgery |
June 2013 | Dept. of Neurosurgery, Geneva University |