1. Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
2. Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
3. Stony Brook University School of Medicine, Stony Brook, NY 11790, USA
4. Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
5. Institute of Neuroscience, Soochow University, Suzhou, Jiangsu 215123, China
6. Ionis Pharmaceuticals, Carlsbad, CA 92008, USA