PT - JOURNAL ARTICLE AU - Alfonso Hernandez-Aguado AU - John R Ashton TI - Without it, we are condemned to repeating ourselves DP - 2004 Sep 01 TA - Journal of Epidemiology and Community Health PG - 725--726 VI - 58 IP - 9 4099 - http://jech.bmj.com/content/58/9/725.short 4100 - http://jech.bmj.com/content/58/9/725.full SO - J Epidemiol Community Health2004 Sep 01; 58