[1] Linkoping Univ Hosp, Dept Clin Neurophysiol, S-58185 Linkoping, Sweden
[2] Linkoping Univ, Fac Hlth Sci, Div Nursing Sci, Dept Med & Hlth Sci, Linkoping, Sweden
[3] Linkoping Univ Hosp, Dept Cardiol, S-58185 Linkoping, Sweden
[4] Linkoping Univ, Fac Hlth Sci, Inst Expt & Clin Med, Linkoping, Sweden
[5] Vaxjo Univ, Sch Hlth Sci & Social Work, Vaxjo, Sweden
[6] Jonkoping Univ, Sch Hlth Sci, Dept Nursing Sci, Jonkoping, Sweden
[7] Unit Res & Dev Primary Care, Jonkoping, Sweden