[1] Univ Glasgow, Coll Med Vet & Life Sci, Inst Hlth & Wellbeing, Hlth Working Lives Grp, 1 Lilybank Gardens, Glasgow G12 8RZ, Lanark, Scotland
[2] Univ Glasgow, Coll Med Vet & Life Sci, Inst Hlth & Wellbeing, MRC CSO Social & Publ Hlth Sci Unit, Glasgow G2 3QB, Lanark, Scotland
[3] Hacettepe Univ, Inst Publ Hlth, Dept Occupat Hlth & Med, TR-06100 Ankara, Turkey
[4] Univ West Scotland, Specialist Community Publ Hlth Nursing Occupat Hl, Paisley Campus, Glasgow PA1 2BE, Lanark, Scotland