1. Department of Neuromuscular Research, National Institute of Neuroscience
2. Department of Neurology, Tohoku University
3. The IIIrd Department of Internal Medicine, Tokyo Medical University
4. Day Neuromuscular Research Laboratory, Massachusetts General Hospital-East
5. The IIIrd Department of Internal Medicine, Kagoshima University
6. The IIIrd Department of Internal Medicine, The Jikei University School of Medicine
7. The IVth Department of Internal Medicine, Aichi Medical University
8. Department of Neurology, Kyoto University
9. Department of Neurology, University of Tokyo
10. Department of Ultrastructural Research, National Institute of Neuroscience