1. Massachusetts General Hospital Department of Neurology, Harvard Medical School, Boston, Massachusetts 02129, United States
2. Advanced Proteomics Facility, Department of Biochemistry, University of Oxford, Oxford, Oxfordshire OX1 3QU, United Kingdom
3. Proteome Sciences LLC, Frankfurt am Main, Hessen 60438, Germany
4. Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, Oxfordshire OX1 3QU, United Kingdom
5. Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford OX1 3QU, United Kingdom