1. Department of Speech-Language Pathology; University of Toronto; Toronto Canada
2. MGH Institute of Health Professions; Boston Massachusetts USA
3. Munroe-Meyer Institute; Nebraska Medical Center; Omaha Nebraska USA
4. Department of Neurology, MDA ALS Clinic; Massachusetts General Hospital; Boston Massachusetts USA
5. Department of Neurology; Harvard Medical School and Beth Israel Deaconess Medical Center; Boston Massachusetts USA
6. ALS/MND Clinic, Sunnybrook Health Sciences Centre, Department of Neurology; University of Toronto; Toronto Canada