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 737 OP 737 VO 60 IS 9 A1 Alvarez-Dardet, Carlos A1 Ashton, John R YR 2006 UL http://jech.bmj.com/content/60/9/737.abstract AB