1. Centre for Language and Communication Science Research, School of Health Sciences, City, University of London, London, UK
2. Department of Oncology and Metabolism, The University of Sheffield, Sheffield, UK
3. Nursing,Midwifery and Allied Health Professions Research Unit, Glasgow Caledonian University, Glasgow UK
4. Department of Neurology with Institute of Translational Neurology, University of Muenster, Muenster, Germany
5. Centre of Research Excellence in Aphasia Recovery and Rehabilitation, La Trobe University, Melbourne Australia
6. Department of Communication Sciences and Disorders, University of South Carolina, South Carolina, Columbia, USA
7. Department of Speech Pathology, Edith Cowan University, and Sir Charles Gairdner Hospital, Perth, Australia
8. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
9. Department of Speech & Hearing Sciences, University College Cork, Cork, Republic of Ireland
10. Department of Health Service Research,School of Health and Related Research (ScHARR), The University of Sheffield, Sheffield, UK
11. School of Medicine, University of Nottingham, Nottingham UK
12. School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
13. Sunnaas Rehabilitation Hospital, Nesodden, Norway
14. Institute of Clinical Medicine, University of Oslo, Oslo Norway