[1] Flinders Univ S Australia, Coll Nursing & Hlth Sci, Speech Pathol, Adelaide, Australia
[2] Flinders Univ S Australia, Caring Futures Inst, Swallowing Neurorehabil Res Lab, Adelaide, Australia
[3] Univ Adelaide, Fac Hlth & Med, Sch Allied Hlth Sci & Practice, Speech Pathol, Adelaide, Australia
[4] Univ East Anglia, Fac Med & Hlth Sci, Norwich, England
[5] Univ Edinburgh, Euan MacDonald Ctr Motor Neuron Dis Res, Edinburgh, Scotland
[6] Univ Edinburgh, Alzheimer Scotland Dementia Res Ctr, Edinburgh, Scotland
[7] Cambridgeshire & Peterborough NHS Fdn Trust, Cambridge, England
[8] Flinders Univ S Australia, Bedford Pk, SA, Australia