Werner Catel – Professor of Neurology and Psychiatry at the University of Leipzig, considered an expert on the program of euthanasia for children and participated in the T-4 Program. Carl Clauberg – Doctor who conducted medical experiments on human beings in Nazi concentration camps during World War II. Leonardo Conti – Head of the Reich Physicians' Chamber (Reichsärztekammer) and leader of the National Socialist German Doctors' League (Nationalsozialistischer Deutscher Ärztebund or NSDÄB).