PT - JOURNAL ARTICLE AU - Braveman, Paula TI - When do we know enough to recommend action? The need to be bold but not reckless DP - 2007 Nov 01 TA - Journal of Epidemiology and Community Health PG - 931--931 VI - 61 IP - 11 4099 - http://jech.bmj.com/content/61/11/931.short 4100 - http://jech.bmj.com/content/61/11/931.full SO - J Epidemiol Community Health2007 Nov 01; 61