1. Department of Neurology, University of California San Francisco, and San Francisco VA Medical Center, San Francisco, California.
2. University of California San Francisco Weill Institute for Neurosciences, San Francisco, California.
3. Department of Rehabilitation Medicine, Icahn School of Medicine at Mt. Sinai, New York, New York.
4. Department of Neurosurgery, Brain and Spinal Injury Center, University of California San Francisco and Zuckerberg San Francisco General Hospital, San Francisco, California.