1. Institute of Neuroscience and Physiology/Physiotherapy, The Sahlgrenska Academy at Göteborg University, Göteborg, Sweden.
2. Doktorand, Leg Sjukgymnast, FoU-enheten i Södra Älvsborg, Sven Eriksonplatsen 4, 503 38 Borås, Sweden. E-mail: annika.billhult@vgregion.se
3. Institute of Caring Sciences, The Sahlgrenska Academy at Göteborg University, Göteborg, Sweden.
4. Institute of Neuroscience and Physiology/Endocrinology, The Sahlgrenska Academy at Göteborg University, Göteborg, Sweden.