[1] Clin Res Ctr, SE-79182 Dalarna, Falun, Sweden
[2] Karolinska Inst, Div Nursing, Dept Neurobiol Care Sci & Soc, Stockholm, Sweden
[3] Norslund Primary Hlth Care Ctr, Dalarna Cty Council, Falun, Sweden
[4] Dalarna Univ, Sch Hlth & Social Sci, Falun, Sweden
[5] Red Cross Univ, Coll Nursing, Stockholm, Sweden
[6] Karolinska Inst, Natl Inst Environm Med, Stockholm, Sweden
[7] Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden
[8] Sophiahemmet Univ Coll, Stockholm, Sweden