1 Department of Neurology and Neurological Sciences, School of Medicine, Stanford University, Stanford, CA, USA.
2 Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA.
3 Institute of Molecular Regenerative Medicine, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria.
4 Department of Genetics, School of Medicine, and Chemistry, Engineering, and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA.
5 Medical Scientist Training Program, Stanford University School of Medicine, Stanford, CA, USA.
6 Department of Chemistry, Stanford ChEM-H and Howard Hughes Medical Institute, Stanford University, Stanford, CA, USA.
7 Department of Laboratory Medicine, Paracelsus Medical University, Salzburg, Austria.
8 Obesity Research Unit, Paracelsus Medical University, Salzburg, Austria.
9 Institute of Molecular Biosciences, BioTechMed-Graz, University of Graz, Graz, Austria.
10 Department of Neurology and Neurological Sciences, School of Medicine, Stanford University, Stanford, CA, USA. twc@stanford.edu.
11 Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA. twc@stanford.edu.
12 Stanford Neurosciences Institute, Stanford University, Stanford, CA, USA. twc@stanford.edu.
13 Department of Veterans Affairs, Palo Alto, CA, USA. twc@stanford.edu.