RT Journal Article SR Electronic T1 Psychosocial factors and public health JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 553 OP 556 DO 10.1136/jech.57.8.553 VO 57 IS 8 A1 A Singh-Manoux YR 2003 UL http://jech.bmj.com/content/57/8/553.abstract AB