1. Department of Neurology; University of Pittsburgh; Pittsburgh Pennsylvania
2. Department of Cell Biology; University of Pittsburgh; Pittsburgh Pennsylvania
3. Department of Molecular Genetics, Biochemistry and Microbiology; University of Cincinnati; Cincinnati Ohio
4. Department of Cellular and Molecular Physiology; Penn State Hershey College of Medicine; Hershey Pennsylvania
5. Veterans Affairs Pittsburgh Health Care System, Geriatric Research, Educational and Clinical Center; Pittsburgh Pennsylvania