RT Journal Article SR Electronic T1 CORRECTION JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 355 OP 355 DO 10.1136/jech.2003.009589corr1 VO 58 IS 4 YR 2004 UL http://jech.bmj.com/content/58/4/355.4.abstract AB