1. Institute of Neurological Sciences; Department of Neurology; Southern General Hospital 1345 Govan Road Glasgow UK G51 4TF
2. National Taiwan University Hospital; Department of Neurology; 7 Chung-Shan S. Road Taipei 10002 Taiwan
3. Dokkyo University School of Medicine; Department of Neurology and Research Institute for Neurological Diseases; Kitakobayashi 880 Mibu Tochigi Japan 321-0293
4. Niigata National Hospital; Department of Neurology and Research Institute for Neurological Diseases; Kashiwazaki Niigata Japan
5. Southern General Hospital; Institute of Neurological Sciences; Govan Road Glasgow UK G51 4TF