1. Speech and Language Pathology Unit, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
2. Division of Speech Language Pathology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
3. Speech and Language Pathology Unit, Skaraborg Hospital, Gothenburg, Region Västra Götaland, Sweden, and
4. Department of Neurology, Angered Hospital, Region Västra Götaland, Sweden