In 1945, neuropathologist Julius Hallervorden from the worldrenowned Kaiser Wilhelm Institute for Brain Research in Berlin-Buch was interviewed by US intelligence officer Leo Alexander, who was investigating the advances of German neurology during the war. During their conversation, Hallervorden eventually mentioned that he had received the brains of hundreds of victims of the "euthanasia" killings for his research. He would soon come to regret his frankness, although, as the Nuremberg Medical Trial