%0 Journal Article %A John R Ashton %A Carlos Alvarez-Dardet %T RESEARCH FOR PRACTICAL PUBLIC HEALTH %D 2002 %R 10.1136/jech.56.9.641 %J Journal of Epidemiology and Community Health %P 641-641 %V 56 %N 9 %U https://jech.bmj.com/content/jech/56/9/641.full.pdf