1. Department of Neurology, Baltimore, MD, Johns Hopkins University, Baltimore, MD
2. Department of Molecular Microbiology and Immunology, Johns Hopkins University, Baltimore, MD
3. Pharmacology and Molecular Sciences, Johns Hopkins University, Baltimore, MD
4. Ciphergen Biosystems Inc., Freemont, CA
5. Department of Pathology, Johns Hopkins University, Baltimore, MD
6. Department of Neuroscience, Johns Hopkins University, Baltimore, MD