1 Department of Neurology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
2 Department of Surgery, University of Alabama at Birmingham, Birmingham, AL 35294, USA; Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA; UAB Laboratory for Biomedical FT-ICR Mass Spectrometry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
3 Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA; UAB Laboratory for Biomedical FT-ICR Mass Spectrometry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
4 Department of Neurology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA. Electronic address: Andrew.West@Duke.edu.