TY - JOUR T1 - Health protection: a contemporary issue worldwide JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 315 LP - 315 VL - 60 IS - 4 AU - John R Ashton Y1 - 2006/04/01 UR - http://jech.bmj.com/content/60/4/315.abstract N2 - Since September 11th, 2001, public health workers around the world have been … ER -