[1] Reg Gavleborg, Dept Patient Safety, Gavle, Sweden
[2] Uppsala Univ, Dept Publ Care & Caring Sci, Uppsala, Sweden
[3] Uppsala Univ, Reg Gavleborg, Ctr Res & Dev, Uppsala, Sweden
[4] Univ Gavle, Dept Hlth & Caring Sci, Fac Hlth & Occupat Studies, Gavle, Sweden
[5] Uppsala Univ, Dept Med Sci Resp Allergy & Sleep Res, Uppsala, Sweden