[1] Lulea Univ Technol, Dept Hlth Sci, S-97187 Lulea, Sweden
[2] Linnaeus Univ, Dept Hlth & Caring Sci, Vaxjo, Sweden
[3] Malardalen Univ, Sch Hlth Care & Social Welf, Vasteras, Sweden
[4] UIT Arctic Univ Norway, Dept Hlth & Care Sci, Tromso, Norway
[5] Halmstad Univ, Sch Hlth & Welf, Halmstad, Sweden