RT Journal Article SR Electronic T1 In this issue JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 281 OP 281 VO 60 IS 4 A1 Carlos Alvarez-Dardet A1 John R Ashton YR 2006 UL http://jech.bmj.com/content/60/4/281.abstract AB