TY - JOUR T1 - APHORISM OF THE MONTH JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 796 LP - 796 VL - 61 IS - 9 AU - Lowell Levin Y1 - 2007/09/01 UR - http://jech.bmj.com/content/61/9/796.abstract N2 - Testing the impact of … ER -