Marin Guentchev received his M.D. and Ph.D. from the University of Vienna, Austria. From 2001 to 2004 he went on to become a Visiting Fellow at the National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD. Until April 2016 he was Head of the Dept of Neurosurgery, St. Anna University Hospital, Sofia, Bulgaria. Currently he is founder and owner of Trinity Medical Center in Sofia, Bulgaria and is Junior Professor (Privatdozent) for neurosurgery at the University of Heidelberg, Germany.