Affiliation: | 1. +46 35 263 52 54+46 35 263 52 55;2. Research and Development Centre, Spenshult Hospital for Rheumatic Diseases, , Oskarstr?m, Sweden;3. School of Social and Health Sciences, Halmstad University, , Halmstad, Sweden;4. Faculty of Health Care and Nursing, Gj?vik University College, , Gj?vik, Norway;5. School of Health Sciences, J?nk?ping University, , J?nk?ping, Sweden;6. Faculty of Health Sciences, Link?ping University, , Link?ping, Sweden |