1. National Hospital for Neurology and Neurosurgery; MRC Centre for Neuromuscular Diseases; PO Box 114 Queen Square London UK WC1N 3BG
2. Janakpuri Superspecialty Hospital; Department of Neurology; C-2/B, Janakpuri New Delhi Delhi India 110058
3. Aston University; Aston Brain Centre; Birmingham UK B4 7ET