title: Professor Ernest A. Spiegel's 80th birthday.
mesh_terms: D001317:Austria; D049673:History, 20th Century; D006801:Humans; D009462:Neurology / Q000266:history*; D009493:Neurosurgery / Q000266:history; D010300:Parkinson Disease / Q000266:history; D013238:Stereotaxic Techniques