1. Center for Anatomy and Cell Biology, Department of Systematic Anatomy,
2. Department of Neurosurgery, and
3. Department of Neurosurgery, Istituto Clinico Humanitas, Milan, Italy
4. Department of Neurosurgery, Krankenanstalt Rudolfstiftung, Vienna, Austria; and
5. Institute of the History of Medicine, Medical University of Vienna, Austria;