[1] Natl Inst Publ Hlth, Ljubljana, Slovenia
[2] Gen Hosp Murska Sobota, Dept Internal Med, Murska Sobota, Slovenia
[3] Jonkoping Univ, Sch Hlth & Welf, Dept Nursing, Jonkoping, Sweden
[4] Linkoping Univ, Dept Med & Hlth Sci, Linkoping, Sweden
[5] Linkoping Univ, Fac Hlth Sci, Dept Social & Welf Studies, Linkoping, Sweden