chef de service, NRI, Fondation Rothschild, Paris

Professor, University of Melbourne; Interventional Neurologist, Mount Sinai, NYC

University Medical Center Groningen

UAB Neurosurgery

Emeritus Professor of Applied Physiology, Leeds Beckett University

Professor of Neurosurgery, Justus-Liebig-University Gießen

University of Virginia

Abington Memorial Hospital, Temple University

Neurosurgeon, Hamilton Health Sciences

University of Bern, University of Southern Switzerland