Affiliation: | 1. Department of Social and Welfare Studies, Link?ping University, Norrk?ping, Sweden;2. Department of Respiratory Medicine and Department of Medical and Health Sciences, Link?ping University, Link?ping, Sweden;3. Department of Medical and Health Sciences, Link?ping University, Link?ping, Sweden;4. Department of Health Sciences, Nursing, Faculty of Health, Science and Technology, Karlstad University, Karlstad, Sweden |