PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd TI - Hygieia DP - 2006 Jul 01 TA - Journal of Epidemiology and Community Health PG - 648--648 VI - 60 IP - 7 4099 - http://jech.bmj.com/content/60/7/648.short 4100 - http://jech.bmj.com/content/60/7/648.full SO - J Epidemiol Community Health2006 Jul 01; 60