Acknowledgements
The workshop was sponsored by The ALS Association; National Institutes of Neurological Disorders and Stroke; The ALS Society of Canada; The Office of Rare Diseases Research; Biogen-Idec; Knopp Biosciences; Bristol Myers Squibb; Pfizer; Isis Pharmaceuticals; and Cytokinetics.
Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.