[1] F79 Karolinska Univ Hosp, Dept Lab Med, Karolinska Inst, Div Clin Immunol, SE-14186 Stockholm, Sweden
[2] Karolinska Univ Hosp, Stockholm, Sweden
[3] Karolinska Inst, Dept Neurobiol Care Sci & Soc, Div Nursing, Stockholm, Sweden
[4] Karolinska Univ Hosp, Div Med & Surg Care, Stockholm, Sweden
[5] Uppsala Univ, Dept Publ Hlth & Caring Sci, Uppsala, Sweden
[6] Wayne State Univ, Dept Family Med & Publ Hlth Sci, Detroit, MI USA
[7] Karolinska Univ Hosp, Stockholm, Sweden
[8] Karlstad Univ, Dept Nursing, Karlstad, Sweden