1. Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA.
2. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
3. Ri.MED Foundation, Palermo, Italy.
4. Department of Neurology, Duke University, Durham, NC 27710, USA.
5. Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Cambridge, MA 02139, USA.
6. Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
7. Geriatric Research, Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.
8. MRC Protein Phosphorylation and Ubiquitylation Units, University of Dundee, Dundee, Scotland.