1. Microsurgical Laboratory, Department of Neurosurgery, Tulane University, New Orleans, Louisiana; and Pierre Wertheimer Neurological and Neurosurgical Hospital, Anatomy Department, Claude Bernard University Lyon, Lyon, France
2. Microneurosurgery Laboratory, Department of Neurosurgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
3. Pierre Wertheimer Neurological and Neurosurgical Hospital, Anatomy Department, Claude Bernard University Lyon, Lyon, France
4. Microsurgical Laboratory, Department of Neurosurgery, University of Illinois at Peoria, Peoria, Illinois; and Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota