[1] Univ West Attica, Sch Publ Hlth, Dept Publ & Community Hlth, Athens 12243, Greece
[2] Univ West Attica, Sch Publ Hlth, Lab Hyg & Epidemiol, Athens 12243, Greece
[3] Vilnius Univ, Inst Hlth Sci, Dept Nursing, Fac Med, LT-01513 Vilnius, Lithuania
[4] Med Univ Plovdiv, Fac Publ Hlth, Dept Nursing, Plovdiv 4002, Bulgaria
[5] Turku Univ Appl Sci, Fac Hlth & Well Being, Turku 20520, Finland
[6] Univ Novo Mesto, Fac Hlth Sci, Novo Mesto 8000, Slovenia
[7] Univ Turku, Dept Nursing Sci, Fac Med, Turku 20014, Finland