Daniel Bereczki is a professor of neurology, chairman of the Department of Neurology, and vice dean of the Faculty of Medicine, Semmelweis University, Budapest, Hungary.  Dr. Bereczki is a board certified neurologist and psychiatrist, with major interest in clinical neurology, especially cerebrovascular diseases. He has gained his clinical and research experience at the Department of Neurology, University of  Debrecen, Hungary;  State University of New York at Stony Brook, USA; and CYRIC Center, Tohoku University, Sendai, Japan. Dr. Bereczki joined the Cochrane Collaboration in 1993, and since 2001 he has been on the Editorial Board of the Cochrane Stroke Review Group.  He also serves on the Editorial Board of the journals Stroke (American Heart Association), Stroke Research and Treatment, Neuropsychopharmacologia Hungarica, and Frontiers in Stroke, and he is a section editor for BMC Neurology. Dr. Bereczki is a consultant for the Medical Research Council, and for the National Health Service, Centre for Reviews and Dissemination (UK), and is the head of the Szentágothai Neuroscience Doctoral School of Semmelweis Universtiy.