Affiliation: | 1. Research and Development Centre, Spenshult Hospital for Rheumatic Diseases, , Oskarstr?m, Sweden;2. School of Social and Health Sciences, Halmstad University, , Sweden;3. Faculty of Health Care and Nursing, Gj?vik University College, , Norway;4. School of Health Sciences, J?nk?ping University, , Sweden;5. The Faculty of Health Sciences, Link?ping University, , Sweden |